1000 (number)

Category:Integers\n1000 is the natural number following 999 and preceding 1001. \n

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Cardinal	One thousand\n
Ordinal	1000th\n
Factorization	\n
Roman numeral	M\n
Binary	1111101000\n
Hexadecimal	3E8\n

In scientific notation, one thousand is written as 10³. The SI prefix for a thousand is "kilo-". The Roman numeral for thousand is M (for mille). See also: millennium, year 1000 AD

Selected numbers in the thousands (1000-1999)

;1001 - sphenic number, pentagonal number\n;1002 - sphenic number, Mertens function zero\n;1005 - Mertens function zero\n;1008 - divisible by the number of primes below it\n;1010 - Mertens function zero\n;1013 - Sophie Germain prime, centered square number, Mertens function zero\n;1014 - Mertens function zero\n;1015 - square pyramidal number\n;1018 - Mertens function zero\n;1019 - Sophie Germain prime\n;1024 - power of two\n;1031 - Sophie Germain prime\n;1035 - triangular number, hexagonal number\n;1049 - Sophie Germain prime\n;1051 - centered pentagonal number\n;1056 - heteromecic number\n;1060 - sum of the first 25 primes\n;1071 - heptagonal number\n;1080 - pentagonal number\n;1081 - triangular number\n;1086 - Smith number\n;1092- divisible by the number of primes below it\n;1103 - Sophie Germain prime\n;1104 - Keith number\n;1105 - Carmichael number, magic constant of nxn magic square and n-Queens Problem for n = 13, centered square number\n;1116- divisible by the number of primes below it\n;1122 - heteromecic number, divisible by the number of primes below it\n;1128 - triangular number, hexagonal number, divisible by the number of primes below it\n;1134- divisible by the number of primes below it\n;1138 - special code for Easter eggs on Star Wars DVDs, because of George Lucas's movie THX-1138\n;1140 - tetrahedral number\n;1156 - octahedral number, centered pentagonal number\n;1161 - sum of the first 26 primes\n;1162 - pentagonal number\n;1176 - triangular number\n;1177 - heptagonal number\n;1184 - amicable number with 1210\n;1190 - heteromecic number\n;1201 - centered square number\n;1210 - amicable number with 1184\n;1219 - Mertens function zero\n;1220 - Mertens function zero\n;1223 - Sophie Germain prime\n;1225 - triangular number, triangular square number, hexagonal number\n;1229 - Sophie Germain prime\n;1240 - square pyramidal number\n;1247 - pentagonal number\n;1255 - Mertens function zero\n;1256 - Mertens function zero\n;1258 - Mertens function zero\n;1260 - highly composite number, heteromecic number\n;1261 - Mertens function zero\n;1264 - sum of the first 27 primes\n;1266 - centered pentagonal number, Mertens function zero\n;1270 - Mertens function zero\n;1279 - Mertens function zero\n;1280 - Mertens function zero\n;1282 - Mertens function zero\n;1285 - Mertens function zero\n;1288 - heptagonal number\n;1289 - Sophie Germain prime, Mertens function zero\n;1291 - Mertens function zero\n;1292 - Mertens function zero\n;1296 - fourth power of 6, sum of the cubes of the first eight integers\n;1297 - Mertens function zero\n;1299 - Mertens function zero\n;1300 - Mertens function zero\n;1301 - centered square number\n;1302 - Mertens function zero\n;1306 - Mertens function zero\n;1318 - Mertens function zero\n;1326 - triangular number, hexagonal number, Mertens function zero\n;1329 - Mertens function zero\n;1330 - tetrahedral number\n;1331 - cube of 11\n;1332 - heteromecic number\n;1335 - pentagonal number, Mertens function zero\n;1336 - Mertens function zero\n;1338 - Mertens function zero\n;1342 - Mertens function zero\n;1371 - sum of the first 28 primes\n;1378 - triangular number\n;1379 - magic constant of nxn magic square and n-Queens Problem for n = 14.\n;1381 - centered pentagonal number\n;1387 - super-Poulet number\n;1404 - heptagonal number\n;1405 = 26^2 + 27^2 = 7^2 + 8^2 + ... + 16^2, centered square number\n;1406 - heteromecic number, semi-meandric number\n;1409 - Sophie Germain prime\n;1419 - Zeisel number\n;1426 - pentagonal number\n;1431 - triangular number, hexagonal number\n;1439 - Sophie Germain prime\n;1451 - Sophie Germain prime\n;1469 - octahedral number\n;1470 - pentagonal pyramidal number\n;1480 - sum of the first 29 primes\n;1481 - Sophie Germain prime\n;1482 - heteromecic number\n;1485 - triangular number\n;1490 - tetranacci number\n;1491 - Mertens function zero\n;1492 - Mertens function zero\n;1496 - square pyramidal number\n;1499 - Sophie Germain prime\n;1501 - centered pentagonal number\n;1511 - Sophie Germain prime\n;1513 - centered square number\n;1518 - Mertens function zero\n;1519 - Mertens function zero\n;1520 - pentagonal number, Mertens function zero\n;1521 - Mertens function zero\n;1523 - Mertens function zero\n;1524 - Mertens function zero\n;1525 - heptagonal number, Mertens function zero\n;1527 - Mertens function zero\n;1528 - Mertens function zero\n;1531 - Mertens function zero\n;1532 - Mertens function zero\n;1537 - Keith number, Mertens function zero\n;1540 - triangular number, hexagonal number, tetrahedral number\n;1543 - Mertens function zero\n;1544 - Mertens function zero\n;1546 - Mertens function zero\n;1559 - Sophie Germain prime\n;1560 - heteromecic number\n;1583 - Sophie Germain prime\n;1593 - sum of the first 30 primes\n;1596 - triangular number\n;1597 - Fibonacci number\n;1601 - Sophie Germain prime\n;1617 - pentagonal number\n;1625 - centered square number\n;1626 - centered pentagonal number\n;1638 - harmonic divisor number\n;1640 - heteromecic number\n;1651 - heptagonal number\n;1653 - triangular number, hexagonal number\n;1657 - cuban prime\n;1680 - highly composite number\n;1695 - magic constant of nxn magic square and n-Queens Problem for n = 15.\n;1701 - hull number of the Starship Enterprise on Star Trek\n;1705 - tribonacci number\n;1711 - triangular number\n;1717 - pentagonal number\n;1720 - sum of the first 31 primes\n;1722 - Giuga number, heteromecic number\n;1728 - cube of 12 and so is the number of cubic inches in a cubic foot\n;1729 - taxicab number, Carmichael number, Zeisel number. In the decimal expansion of e , the first time all 10 digits appear in sequence starts at the 1729th decimal place. Trivia: In 1979 the rock musical Hair closed on Broadway in New York City after 1729 performances. \n;1733 - Sophie Germain prime\n;1741 - centered square number\n;1756 - centered pentagonal number\n;1770 - triangular number, hexagonal number, Town of Seventeen Seventy in Australia\n;1771 - tetrahedral number\n;1782 - heptagonal number\n;1785 - square pyramidal number\n;1800 - 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 tally\n;1801 - cuban prime\n;1806 - heteromecic number\n;1811 - Sophie Germain prime\n;1820 - pentagonal number\n;1828 - meandric number, open meandric number\n;1830 - triangular number\n;1834 - octahedral number\n;1841 - Mertens function zero\n;1843 - Mertens function zero\n;1844 - Mertens function zero\n;1845 - Mertens function zero\n;1851 - sum of the first 32 primes\n;1853 - Mertens function zero\n;1854 - Mertens function zero\n;1857 - Mertens function zero\n;1861 - centered square number, Mertens function zero\n;1862 - Mertens function zero\n;1863 - Mertens function zero\n;1864 - Mertens function zero\n;1866 - Mertens function zero\n;1885 - Zeisel number\n;1889 - Sophie Germain prime\n;1891 - triangular number, hexagonal number, centered pentagonal number\n;1892 - heteromecic number\n;1901 - Sophie Germain prime\n;1918 - heptagonal number\n;1926 - pentagonal number\n;1929 - Mertens function zero\n;1931 - Sophie Germain prime\n;1938 - Mertens function zero\n;1951 - cuban prime\n;1953 - triangular number\n;1973 - Sophie Germain prime\n;1980 - heteromecic number\n;1984 - the novel Nineteen Eighty-Four\n;1985 - centered square number\n;1988 - sum of the first 33 primes \n\n\n\n\n\n