The Son of Man
Well-Known Member
job well done guys 
Count too 15,000
- Thread starter Nvr2Stond
- Start date
DWR
Well-Known Member
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1001-1249
1001 - sphenic number (7 x 11 x 13), pentagonal number, pentatope number1002 - sphenic number, Mertens function zero, abundant number1003 - semiprime (17 × 59)1005 - Mertens function zero1008 - divisible by the number of primes below it1009 - first prime above 10001010 - Mertens function zero1013 - Sophie Germain prime, centered square number, Mertens function zero1014 - Mertens function zero1015 - square pyramidal number1016 - member of the Mian-Chowla sequence1018 - Mertens function zero1019 - Sophie Germain prime, safe prime1020 - polydivisible number1023 - is the highest number one can count to on one's fingers using binary; also the magic number used in Global Positioning System signals1024 - 210, the amount of bytes in a kilobyte (in 1999, the IEC coined kibibyte to use for 1024 with kilobyte being 1000, but this convention has not been widely adopted)1027 - sum of the squares of the first eight primes1028 - sum of totient function for first 58 integers1031 - Sophie Germain prime1033 - locale ID of English (United States) in (some version of) Windows.[1].1035 - triangular number, hexagonal number1049 - Sophie Germain prime, highly cototient number1051 - centered pentagonal number1056 - pronic number1060 - sum of the first 25 primes1071 - heptagonal number1072 - centered heptagonal number1079 - every positive integer is the sum of at most 1079 tenth powers.1080 - pentagonal number1081 - triangular number, member of Padovan sequence1086 - Smith number, sum of totient function for first 59 integers1087 - Chen prime, cousin prime, lucky prime, Kynea number1089 - 332, nonagonal number, centered octagonal number1091 - cousin prime and twin prime1092- divisible by the number of primes below it1093 - the smallest Wieferich prime (the only other known Wieferich prime is 3511), twin prime and star number1102 - sum of totient function for first 60 integers1103 - Sophie Germain prime, balanced prime1104 - Keith number1105 - Carmichael number, magic constant of n × n normal magic square and n-Queens Problem for n = 13, decagonal number, centered square number, 1105 = 332 + 42 = 322 + 92 = 312 + 122 = 232 + 2421116 - divisible by the number of primes below it1122 - pronic number, divisible by the number of primes below it1123 - balanced prime1124 - Leyland number1128 - triangular number, hexagonal number, divisible by the number of primes below it1134- divisible by the number of primes below it1138 - recurring number in the works of George Lucas and his companies, beginning with his first feature film - THX 1138; particularly, a special code for Easter eggs on Star Wars DVDs.1140 - tetrahedral number1152 - highly totient number1153 - Proth prime1156 - 342, octahedral number, centered pentagonal number1159 - member of the Mian-Chowla sequence1161 - sum of the first 26 primes1162 - pentagonal number, sum of totient function for first 61 integers1169 - highly cototient number1170 - highest possible score in an NAQT match1176 - triangular number1177 - heptagonal number1184 - amicable number with 12101187 - safe prime, Stern prime, balanced prime1190 - pronic number1192 - sum of totient function for first 62 integers1198 - centered heptagonal number1200 - the number of households the Nielsen ratings sample[1]1201 - centered square number1210 - amicable number with 11841216 - nonagonal number1217 - Proth prime1219 - Mertens function zero1220 - Mertens function zero1223 - Sophie Germain prime, balanced prime1225 - 352, triangular number, triangular square number, hexagonal number, centered octagonal number1228 - sum of totient function for first 63 integers1229 - Sophie Germain prime1233 - 122 + 3321240 - square pyramidal number1241 - centered cube number1242 - decagonal number1247 - pentagonal number https://www.rollitup.org/members/dwr.html
[edit] 1250-1499
1255 - Mertens function zero1256 - Mertens function zero1258 - Mertens function zero1259 - highly cototient number1260 - highly composite number, pronic number, vampire number, sum of totient function for first 64 integers1261 - star number, Mertens function zero1264 - sum of the first 27 primes1266 - centered pentagonal number, Mertens function zero1270 - Mertens function zero1279 - Mertens function zero1280 - Mertens function zero1282 - Mertens function zero1283 - safe prime1285 - Mertens function zero1288 - heptagonal number1289 - Sophie Germain prime, Mertens function zero1291 - Mertens function zero1292 - Mertens function zero1296 - 64, 362, sum of the cubes of the first eight positive integers, the number of rectangles on a normal 8x8 chessboard1297 - Mertens function zero1299 - Mertens function zero1300 - Mertens function zero, largest possible win margin in an NAQT match1301 - centered square number1302 - Mertens function zero1306 - Mertens function zero1307 - safe prime1312 - member of the Mian-Chowla sequence1308 - sum of totient function for first 65 integers1318 - Mertens function zero1319 - safe prime1325 - Markov number1326 - triangular number, hexagonal number, Mertens function zero1328 - sum of totient function for first 66 integers1329 - Mertens function zero1330 - tetrahedral number, forms a Ruth-Aaron pair with 1331 under second definition1331 - 113, centered heptagonal number, forms a Ruth-Aaron pair with 1330 under second definition1332 - pronic number1335 - pentagonal number, Mertens function zero1336 - Mertens function zero1337 - Used in the novel form of spelling called leet1338 - Mertens function zero1342 - Mertens function zero1350 - nonagonal number1365 - pentatope number1367 - safe prime, balanced prime1369 - 372, centered octagonal number1371 - sum of the first 28 primes1378 - triangular number1379 - magic constant of n × n normal magic square and n-Queens Problem for n = 14.1381 - centered pentagonal number1387 - super-Poulet number, decagonal number1394 - sum of totient function for first 67 integers1395 - vampire number, member of the Mian-Chowla sequence1404 - heptagonal number1405 - 262 + 272,
, centered square number1406 - pronic number, semi-meandric number1409 - Sophie Germain prime, smallest number whose eight power is the sum of 8 eighth powers, Proth prime1419 - Zeisel number1425 - self-descriptive number in base 51426 - sum of totient function for first 68 integers1426 - pentagonal number1430 - Catalan number1431 - triangular number, hexagonal number1432 - member of Padovan sequence1435 - vampire number; the standard railway gauge in millimetres, equivalent to 4' 8½"1439 - Sophie Germain prime, safe prime1440 - a highly totient number and a 481-gonal number. Also, the number of minutes in one day, and the blocksize of a standard 3,5" floppy disk1441 - star number1444 - 382, smallest pandigital number in Roman numerals1451 - Sophie Germain prime1469 - octahedral number, highly cototient number1470 - pentagonal pyramidal number, sum of totient function for first 69 integers1471 - centered heptagonal number1480 - sum of the first 29 primes1481 - Sophie Germain prime1482 - pronic number1485 - triangular number1487 - safe prime1490 - tetranacci number1491 - nonagonal number, Mertens function zero1492 - Mertens function zero1493 - Stern prime1494 - sum of totient function for first 70 integers1496 - square pyramidal number1499 - Sophie Germain prime https://www.rollitup.org/members/dwr.html
[edit] 1500-1749
1501 - centered pentagonal number1511 - Sophie Germain prime, balanced prime1513 - centered square number1518 - Mertens function zero1519 - Mertens function zero1520 - pentagonal number, Mertens function zero, forms a Ruth-Aaron pair with 1521 under second definition1521 - 392, Mertens function zero, centered octagonal number, forms a Ruth-Aaron pair with 1520 under second definition1523 - Mertens function zero, safe prime, member of the Mian-Chowla sequence1524 - Mertens function zero1525 - heptagonal number, Mertens function zero1527 - Mertens function zero1528 - Mertens function zero1530 - vampire number1531 - Mertens function zero1532 - Mertens function zero1535 - Thabit number1537 - Keith number, Mertens function zero1540 - triangular number, hexagonal number, decagonal number, tetrahedral number1543 - Mertens function zero1544 - Mertens function zero1546 - Mertens function zero1556 - sum of the squares of the first nine primes1559 - Sophie Germain prime1560 - pronic number1564 - sum of totient function for first 71 integers1572 - member of the Mian-Chowla sequence1575 - odd abundant number1583 - Sophie Germain prime1588 - sum of totient function for first 72 integers1593 - sum of the first 30 primes1596 - triangular number1597 - Fibonacci number, Markov number,Prime Number, emirp1600 - 402, street number on Pennsylvania Avenue of the White House,Meters; Common High School Track Event, perfect score on SAT1601 - Sophie Germain prime, Proth prime, the novel 1601 (Mark Twain)1616 - the year Shakespeare died1617 - pentagonal number1618 - centered heptagonal number1619 - safe prime1625 - centered square number1626 - centered pentagonal number1633 - star number1638 - harmonic divisor number1639 - nonagonal number1640 - pronic number1649 - highly cototient number, Leyland number1651 - heptagonal number1653 - triangular number, hexagonal number1657 - cuban prime1660 - sum of totient function for first 73 integers1666 - largest efficient pandigital number in Roman numerals (each symbol occurs exactly once)1679 - highly cototient number, semiprime (23 × 73) (see also Arecibo message)1680 - highly composite number1681 - 412, smallest number yielded by the formula n2 + n + 41 that is not a prime; centered octagonal number1682 - member of a Ruth-Aaron pair (first definition)1683 - member of a Ruth-Aaron pair (first definition)1695 - magic constant of n × n normal magic square and n-Queens Problem for n = 15.1696 - sum of totient function for first 74 integers1701 - decagonal number, hull number of the U.S.S. Enterprise on Star Trek1705 - tribonacci number1709 - first of a sequence of eight primes formed by adding 57 in the middle. 1709, 175709, 17575709, 1757575709, 175757575709, 17575757575709, 1757575757575709 and 175757575757575709 are all prime, but 17575757575757575709 = 232433 × 756164467857731711 - triangular number1717 - pentagonal number1720 - sum of the first 31 primes1722 - Giuga number, pronic number1728 - the quantity expressed as 1000 in duodecimal, that is, the cube of twelve (called a great gross), and so, the number of cubic inches in a cubic foot1729 - taxicab number, Carmichael number, Zeisel number, centered cube number, Hardy-Ramanujan number. In the decimal expansion of e the first time all 10 digits appear in sequence starts at the 1729th decimal place. In 1979 the rock musical Hair closed on Broadway in New York City after 1729 performances.1733 - Sophie Germain prime1736 - sum of totient function for first 75 integers1741 - centered square number1747 - balanced prime https://www.rollitup.org/members/dwr.html
[edit] 1750-1999
1753 - balanced prime1756 - centered pentagonal number1764 - 4221770 - triangular number, hexagonal number, Town of Seventeen Seventy in Australia1771 - tetrahedral number1772 - centered heptagonal number, sum of totient function for first 76 integers1782 - heptagonal number1785 - square pyramidal number1791 - largest natural number that cannot be expressed as a sum of at most four hexagonal numbers.1794 - nonagonal number1800 - pentagonal pyramidal number, also, in da Ponte's Don Giovanni, the number of women Don Giovanni had slept with so far when confronted by Donna Elvira, according to Leporello's tally1801 - cuban prime1806 - pronic number, product of first four terms of Sylvester's sequence, primary pseudoperfect number1807 - fifth term of Sylvester's sequence1811 - Sophie Germain prime1820 - pentagonal number, pentatope number1821 - member of the Mian-Chowla sequence1823 - safe prime1827 - vampire number1828 - meandric number, open meandric number1830 - triangular number1832 - sum of totient function for first 77 integers1834 - octahedral number, sum of the cubes of the first five primes1836 - factor by which a proton is more massive than an electron1837 - star number1841 - Mertens function zero1843 - Mertens function zero1844 - Mertens function zero1845 - Mertens function zero1849 - 432, centered octagonal number1851 - sum of the first 32 primes1853 - Mertens function zero1854 - Mertens function zero1856 - sum of totient function for first 78 integers1857 - Mertens function zero1861 - centered square number, Mertens function zero1862 - Mertens function zero, forms a Ruth-Aaron pair with 1863 under second definition1863 - Mertens function zero, forms a Ruth-Aaron pair with 1862 under second definition1864 - Mertens function zero1866 - Mertens function zero1870 - decagonal number1885 - Zeisel number1889 - Sophie Germain prime, highly cototient number1891 - triangular number, hexagonal number, centered pentagonal number1892 - pronic number1896 - member of the Mian-Chowla sequence1897 - member of Padovan sequence1900 - 1900 or Novecento is a 1977 movie1901 - Sophie Germain prime1907 - safe prime, balanced prime1918 - heptagonal number1926 - pentagonal number1929 - Mertens function zero1931 - Sophie Germain prime1933 - centered heptagonal number1934 - sum of totient function for first 79 integers1936 - 4421938 - Mertens function zero1951 - cuban prime1953 - triangular number1956 - nonagonal number1966 - sum of totient function for first 80 integers1969 - the movie 1969 (film)1973 - Sophie Germain prime1980 - pronic number1984 - 11111000000 in binary also see 1984 (disambiguation)1985 - centered square number1988 - sum of the first 33 primesrofl !
1001-1249
1001 - sphenic number (7 x 11 x 13), pentagonal number, pentatope number1002 - sphenic number, Mertens function zero, abundant number1003 - semiprime (17 × 59)1005 - Mertens function zero1008 - divisible by the number of primes below it1009 - first prime above 10001010 - Mertens function zero1013 - Sophie Germain prime, centered square number, Mertens function zero1014 - Mertens function zero1015 - square pyramidal number1016 - member of the Mian-Chowla sequence1018 - Mertens function zero1019 - Sophie Germain prime, safe prime1020 - polydivisible number1023 - is the highest number one can count to on one's fingers using binary; also the magic number used in Global Positioning System signals1024 - 210, the amount of bytes in a kilobyte (in 1999, the IEC coined kibibyte to use for 1024 with kilobyte being 1000, but this convention has not been widely adopted)1027 - sum of the squares of the first eight primes1028 - sum of totient function for first 58 integers1031 - Sophie Germain prime1033 - locale ID of English (United States) in (some version of) Windows.[1].1035 - triangular number, hexagonal number1049 - Sophie Germain prime, highly cototient number1051 - centered pentagonal number1056 - pronic number1060 - sum of the first 25 primes1071 - heptagonal number1072 - centered heptagonal number1079 - every positive integer is the sum of at most 1079 tenth powers.1080 - pentagonal number1081 - triangular number, member of Padovan sequence1086 - Smith number, sum of totient function for first 59 integers1087 - Chen prime, cousin prime, lucky prime, Kynea number1089 - 332, nonagonal number, centered octagonal number1091 - cousin prime and twin prime1092- divisible by the number of primes below it1093 - the smallest Wieferich prime (the only other known Wieferich prime is 3511), twin prime and star number1102 - sum of totient function for first 60 integers1103 - Sophie Germain prime, balanced prime1104 - Keith number1105 - Carmichael number, magic constant of n × n normal magic square and n-Queens Problem for n = 13, decagonal number, centered square number, 1105 = 332 + 42 = 322 + 92 = 312 + 122 = 232 + 2421116 - divisible by the number of primes below it1122 - pronic number, divisible by the number of primes below it1123 - balanced prime1124 - Leyland number1128 - triangular number, hexagonal number, divisible by the number of primes below it1134- divisible by the number of primes below it1138 - recurring number in the works of George Lucas and his companies, beginning with his first feature film - THX 1138; particularly, a special code for Easter eggs on Star Wars DVDs.1140 - tetrahedral number1152 - highly totient number1153 - Proth prime1156 - 342, octahedral number, centered pentagonal number1159 - member of the Mian-Chowla sequence1161 - sum of the first 26 primes1162 - pentagonal number, sum of totient function for first 61 integers1169 - highly cototient number1170 - highest possible score in an NAQT match1176 - triangular number1177 - heptagonal number1184 - amicable number with 12101187 - safe prime, Stern prime, balanced prime1190 - pronic number1192 - sum of totient function for first 62 integers1198 - centered heptagonal number1200 - the number of households the Nielsen ratings sample[1]1201 - centered square number1210 - amicable number with 11841216 - nonagonal number1217 - Proth prime1219 - Mertens function zero1220 - Mertens function zero1223 - Sophie Germain prime, balanced prime1225 - 352, triangular number, triangular square number, hexagonal number, centered octagonal number1228 - sum of totient function for first 63 integers1229 - Sophie Germain prime1233 - 122 + 3321240 - square pyramidal number1241 - centered cube number1242 - decagonal number1247 - pentagonal number https://www.rollitup.org/members/dwr.html
[edit] 1250-1499
1255 - Mertens function zero1256 - Mertens function zero1258 - Mertens function zero1259 - highly cototient number1260 - highly composite number, pronic number, vampire number, sum of totient function for first 64 integers1261 - star number, Mertens function zero1264 - sum of the first 27 primes1266 - centered pentagonal number, Mertens function zero1270 - Mertens function zero1279 - Mertens function zero1280 - Mertens function zero1282 - Mertens function zero1283 - safe prime1285 - Mertens function zero1288 - heptagonal number1289 - Sophie Germain prime, Mertens function zero1291 - Mertens function zero1292 - Mertens function zero1296 - 64, 362, sum of the cubes of the first eight positive integers, the number of rectangles on a normal 8x8 chessboard1297 - Mertens function zero1299 - Mertens function zero1300 - Mertens function zero, largest possible win margin in an NAQT match1301 - centered square number1302 - Mertens function zero1306 - Mertens function zero1307 - safe prime1312 - member of the Mian-Chowla sequence1308 - sum of totient function for first 65 integers1318 - Mertens function zero1319 - safe prime1325 - Markov number1326 - triangular number, hexagonal number, Mertens function zero1328 - sum of totient function for first 66 integers1329 - Mertens function zero1330 - tetrahedral number, forms a Ruth-Aaron pair with 1331 under second definition1331 - 113, centered heptagonal number, forms a Ruth-Aaron pair with 1330 under second definition1332 - pronic number1335 - pentagonal number, Mertens function zero1336 - Mertens function zero1337 - Used in the novel form of spelling called leet1338 - Mertens function zero1342 - Mertens function zero1350 - nonagonal number1365 - pentatope number1367 - safe prime, balanced prime1369 - 372, centered octagonal number1371 - sum of the first 28 primes1378 - triangular number1379 - magic constant of n × n normal magic square and n-Queens Problem for n = 14.1381 - centered pentagonal number1387 - super-Poulet number, decagonal number1394 - sum of totient function for first 67 integers1395 - vampire number, member of the Mian-Chowla sequence1404 - heptagonal number1405 - 262 + 272,
, centered square number1406 - pronic number, semi-meandric number1409 - Sophie Germain prime, smallest number whose eight power is the sum of 8 eighth powers, Proth prime1419 - Zeisel number1425 - self-descriptive number in base 51426 - sum of totient function for first 68 integers1426 - pentagonal number1430 - Catalan number1431 - triangular number, hexagonal number1432 - member of Padovan sequence1435 - vampire number; the standard railway gauge in millimetres, equivalent to 4' 8½"1439 - Sophie Germain prime, safe prime1440 - a highly totient number and a 481-gonal number. Also, the number of minutes in one day, and the blocksize of a standard 3,5" floppy disk1441 - star number1444 - 382, smallest pandigital number in Roman numerals1451 - Sophie Germain prime1469 - octahedral number, highly cototient number1470 - pentagonal pyramidal number, sum of totient function for first 69 integers1471 - centered heptagonal number1480 - sum of the first 29 primes1481 - Sophie Germain prime1482 - pronic number1485 - triangular number1487 - safe prime1490 - tetranacci number1491 - nonagonal number, Mertens function zero1492 - Mertens function zero1493 - Stern prime1494 - sum of totient function for first 70 integers1496 - square pyramidal number1499 - Sophie Germain prime https://www.rollitup.org/members/dwr.html[edit] 1500-1749
1501 - centered pentagonal number1511 - Sophie Germain prime, balanced prime1513 - centered square number1518 - Mertens function zero1519 - Mertens function zero1520 - pentagonal number, Mertens function zero, forms a Ruth-Aaron pair with 1521 under second definition1521 - 392, Mertens function zero, centered octagonal number, forms a Ruth-Aaron pair with 1520 under second definition1523 - Mertens function zero, safe prime, member of the Mian-Chowla sequence1524 - Mertens function zero1525 - heptagonal number, Mertens function zero1527 - Mertens function zero1528 - Mertens function zero1530 - vampire number1531 - Mertens function zero1532 - Mertens function zero1535 - Thabit number1537 - Keith number, Mertens function zero1540 - triangular number, hexagonal number, decagonal number, tetrahedral number1543 - Mertens function zero1544 - Mertens function zero1546 - Mertens function zero1556 - sum of the squares of the first nine primes1559 - Sophie Germain prime1560 - pronic number1564 - sum of totient function for first 71 integers1572 - member of the Mian-Chowla sequence1575 - odd abundant number1583 - Sophie Germain prime1588 - sum of totient function for first 72 integers1593 - sum of the first 30 primes1596 - triangular number1597 - Fibonacci number, Markov number,Prime Number, emirp1600 - 402, street number on Pennsylvania Avenue of the White House,Meters; Common High School Track Event, perfect score on SAT1601 - Sophie Germain prime, Proth prime, the novel 1601 (Mark Twain)1616 - the year Shakespeare died1617 - pentagonal number1618 - centered heptagonal number1619 - safe prime1625 - centered square number1626 - centered pentagonal number1633 - star number1638 - harmonic divisor number1639 - nonagonal number1640 - pronic number1649 - highly cototient number, Leyland number1651 - heptagonal number1653 - triangular number, hexagonal number1657 - cuban prime1660 - sum of totient function for first 73 integers1666 - largest efficient pandigital number in Roman numerals (each symbol occurs exactly once)1679 - highly cototient number, semiprime (23 × 73) (see also Arecibo message)1680 - highly composite number1681 - 412, smallest number yielded by the formula n2 + n + 41 that is not a prime; centered octagonal number1682 - member of a Ruth-Aaron pair (first definition)1683 - member of a Ruth-Aaron pair (first definition)1695 - magic constant of n × n normal magic square and n-Queens Problem for n = 15.1696 - sum of totient function for first 74 integers1701 - decagonal number, hull number of the U.S.S. Enterprise on Star Trek1705 - tribonacci number1709 - first of a sequence of eight primes formed by adding 57 in the middle. 1709, 175709, 17575709, 1757575709, 175757575709, 17575757575709, 1757575757575709 and 175757575757575709 are all prime, but 17575757575757575709 = 232433 × 756164467857731711 - triangular number1717 - pentagonal number1720 - sum of the first 31 primes1722 - Giuga number, pronic number1728 - the quantity expressed as 1000 in duodecimal, that is, the cube of twelve (called a great gross), and so, the number of cubic inches in a cubic foot1729 - taxicab number, Carmichael number, Zeisel number, centered cube number, Hardy-Ramanujan number. In the decimal expansion of e the first time all 10 digits appear in sequence starts at the 1729th decimal place. In 1979 the rock musical Hair closed on Broadway in New York City after 1729 performances.1733 - Sophie Germain prime1736 - sum of totient function for first 75 integers1741 - centered square number1747 - balanced prime https://www.rollitup.org/members/dwr.html
[edit] 1750-1999
1753 - balanced prime1756 - centered pentagonal number1764 - 4221770 - triangular number, hexagonal number, Town of Seventeen Seventy in Australia1771 - tetrahedral number1772 - centered heptagonal number, sum of totient function for first 76 integers1782 - heptagonal number1785 - square pyramidal number1791 - largest natural number that cannot be expressed as a sum of at most four hexagonal numbers.1794 - nonagonal number1800 - pentagonal pyramidal number, also, in da Ponte's Don Giovanni, the number of women Don Giovanni had slept with so far when confronted by Donna Elvira, according to Leporello's tally1801 - cuban prime1806 - pronic number, product of first four terms of Sylvester's sequence, primary pseudoperfect number1807 - fifth term of Sylvester's sequence1811 - Sophie Germain prime1820 - pentagonal number, pentatope number1821 - member of the Mian-Chowla sequence1823 - safe prime1827 - vampire number1828 - meandric number, open meandric number1830 - triangular number1832 - sum of totient function for first 77 integers1834 - octahedral number, sum of the cubes of the first five primes1836 - factor by which a proton is more massive than an electron1837 - star number1841 - Mertens function zero1843 - Mertens function zero1844 - Mertens function zero1845 - Mertens function zero1849 - 432, centered octagonal number1851 - sum of the first 32 primes1853 - Mertens function zero1854 - Mertens function zero1856 - sum of totient function for first 78 integers1857 - Mertens function zero1861 - centered square number, Mertens function zero1862 - Mertens function zero, forms a Ruth-Aaron pair with 1863 under second definition1863 - Mertens function zero, forms a Ruth-Aaron pair with 1862 under second definition1864 - Mertens function zero1866 - Mertens function zero1870 - decagonal number1885 - Zeisel number1889 - Sophie Germain prime, highly cototient number1891 - triangular number, hexagonal number, centered pentagonal number1892 - pronic number1896 - member of the Mian-Chowla sequence1897 - member of Padovan sequence1900 - 1900 or Novecento is a 1977 movie1901 - Sophie Germain prime1907 - safe prime, balanced prime1918 - heptagonal number1926 - pentagonal number1929 - Mertens function zero1931 - Sophie Germain prime1933 - centered heptagonal number1934 - sum of totient function for first 79 integers1936 - 4421938 - Mertens function zero1951 - cuban prime1953 - triangular number1956 - nonagonal number1966 - sum of totient function for first 80 integers1969 - the movie 1969 (film)1973 - Sophie Germain prime1980 - pronic number1984 - 11111000000 in binary also see 1984 (disambiguation)1985 - centered square number1988 - sum of the first 33 primesrofl !