   2000 (two thousand) is a natural number following 1999 and preceding 2001. two thousand is the highest number expressible using only two unmodified characters in roman numerals (mm). two thousand is also: * in the name of the products lever 2000 and grecian 2000, windows 2000 * in star trek, the registry number of the uss excelsior, nx-2000 in star trek&nbsp;iii: the search for spock, and ncc-2000 commanded by hikaru sulu in star trek&nbsp;vi: the undiscovered country. * the postal code for antwerp (belgium) and sydney (australia) == selected numbers in the range 2001â2999 == * 2001 â sphenic number * 2003 â sophie germain prime and the smallest prime number in 2000's * 2005 â a vertically symmetric number * 2009 â 7^4 - 7^3 - 7^2 * 2011 â sexy prime number. also, sum of eleven consecutive primes: 2011=157+163+167+173+179+181+191+193+197+199+211. * 2015 â lucasâcarmichael number * 2016 â triangular number * 2017 â mertens function zero. (2011, 2017) is a sexy prime pair. * 2020 â sum of the totient function for the first 81 integers * 2024 â tetrahedral number * 2025 â 45^2, sum of the cubes of the first nine integers, centered octagonal number * 2027 â safe prime * 2029 â member of the mianâchowla sequence * 2030 â 21^2 + 22^2 + 23^2 + 24^2=25^2 + 26^2 + 27^2 * 2031 â centered pentagonal number * 2039 â sophie germain prime, safe prime * 2047 â super-poulet number, woodall number, decagonal number. also, 2047 = 211&nbsp;&minus;&nbsp;1 = 23&nbsp;&times;&nbsp;89 and is the first mersenne number that is composite for a prime exponent. * 2048 â power of two * 2056 â magic constant of nÃn normal magic square and n-queens problem for n = 16. * 2060 â sum of the totient function for the first 82 integers * 2063 â sophie germain prime, safe prime * 2069 â sophie germain prime * 2070 â pronic number * 2080 â triangular number * 2093 â mertens function zero * 2095 â mertens function zero * 2096 â mertens function zero * 2097 â mertens function zero * 2099 â mertens function zero, safe prime, highly cototient number * 2100 â mertens function zero * 2101 â centered heptagonal number * 2107 â member of a ruthâaaron pair with 2108 (first definition) * 2108 â member of a ruthâaaron pair with 2107 (first definition) * 2109 â square pyramidal number * 2112 â the break-through album of the band [[2112 (albu
Integers