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Science Fair Project Encyclopedia

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2000 (number)

Two thousand (2000) is the natural number following 1999 and preceding 2001.

 2000 Cardinal Two thousand Ordinal Two thousandth Factorization $2000 = 2^4 \cdot 5^3$ Roman numeral MM Binary 11111010000 Hexadecimal 7D0

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 , not to mention Windows 2000
• In Star Trek, the registry number of the USS Excelsior, NX-2000 in Star Trek III: The Search for Spock, and NCC-2000 commanded by Hikaru Sulu in Star Trek VI: The Undiscovered Country.

Selected numbers in the range 2001-2999

2001 - sphenic number
2003 - Sophie Germain prime
2016 - triangular number
2017 - Mertens function zero
2024 - tetrahedral number
2025 - sum of the cubes of the first nine integers, 45^2, centered octagonal number
2027 - safe prime
2030 = 21² + 22² + 23² + 24² = 25² + 26² + 27²
2031 - centered pentagonal number
2039 - Sophie Germain prime, safe prime
2047 - super-Poulet number, Woodall number, decagonal number
2048 - power of two
2056 - magic constant of n×n magic square and n-Queens Problem for n = 16.
2063 - Sophie Germain prime, safe prime
2069 - Sophie Germain prime
2070 - pronic number
2080 - triangular number
2093 - Mertens function zero
2095 - Mertens function zero
2096 - Mertens function zero
2097 - Mertens function zero
2099 - Mertens function zero, safe prime
2100 - Mertens function zero
2101 - centered heptagonal number
2109 - square pyramidal number
2113 - Mertens function zero
2116 = 46^2
2117 - Mertens function zero
2119 - Mertens function zero
2120 - Mertens function zero
2122 - Mertens function zero
2125 - nonagonal number
2127 - sum of the first 34 primes
2129 - Sophie Germain prime
2135 - Mertens function zero
2136 - Mertens function zero
2138 - Mertens function zero
2141 - Sophie Germain prime
2145 - triangular number
2162 - pronic number
2171 - Mertens function zero
2172 - Mertens function zero
2176 - pentagonal pyramidal number, centered pentagonal number
2179 - Wedderburn-Etherington number
2187 - vampire number, 3^7
2188 - Motzkin number
2197 = 13^3
2205 - odd abundant number
2207 - safe prime
2208 - Keith number
2209 = 47^2, centered octagonal number
2211 - triangular number
2223 - Kaprekar number
2232 - decagonal number
2255 - octahedral number
2256 - pronic number
2269 - cuban prime
2273 - Sophie Germain prime
2276 - sum of the first 35 primes, centered heptagonal number
2278 - triangular number
2294 - Mertens function zero
2295 - Mertens function zero
2296 - Mertens function zero
2300 - tetrahedral number
2301 - nonagonal number
2304 = 48^2
2306 - Mertens function zero
2309 - primorial prime, Mertens function zero
2310 - 5th primorial
2311 - primorial prime
2321 - Mertens function zero
2322 - Mertens function zero
2326 - centered pentagonal number
2331 - centered cube number
2338 - Mertens function zero
2339 - Sophie Germain prime
2346 - triangular number
2351 - Sophie Germain prime
2352 - pronic number
2357 - Smarandache-Wellin prime
2393 - Sophie Germain prime
2397 - sum of the squares of the first ten primes
2399 - Sophie Germain prime
2400 - perfect score on SAT tests administered after 2005
2401 = 7^4 = 49^2, centered octagonal number
2415 - triangular number
2425 - decagonal number
2427 - sum of the first 36 primes
2437 - cuban prime
2447 - safe prime
2450 - pronic number
2458 - centered heptagonal number
2459 - Sophie Germain prime, safe prime
2465 - magic constant of n×n magic square and n-Queens Problem for n = 17, Carmichael number
2470 - square pyramidal number
2481 - centered pentagonal number
2484 - nonagonal number
2485 - triangular number
2500 = 50^2
2501 - Mertens function zero
2502 - Mertens function zero
2517 - Mertens function zero
2520 - highly composite number; smallest number divisible by all numbers up to ten; Harshad number in several bases
2522 - Mertens function zero
2523 - Mertens function zero
2524 - Mertens function zero
2525 - Mertens function zero
2530 - Mertens function zero
2533 - Mertens function zero
2537 - Mertens function zero
2538 - Mertens function zero
2543 - Sophie Germain prime
2549 - Sophie Germain prime
2550 - pronic number
2556 - triangular number
2567 - Mertens function zero
2568 - Mertens function zero
2570 - Mertens function zero
2579 - safe prime
2580 - Keith number
2584 - Fibonacci number, sum of the first 37 primes
2600 - tetrahedral number
2601 = 51^2
2620 - amicable number with 2924
2626 - decagonal number
2628 - triangular number
2641 - centered pentagonal number
2647 - centered heptagonal number
2652 - pronic number
2674 - nonagonal number
2680 - number of 11-Queens Problem solutions
2689 - Mertens function zero
2693 - Sophie Germain prime
2699 - Sophie Germain prime
2701 - triangular number, super-Poulet number
2704 = 52^2
2728 - Kaprekar number
2736 - octahedral number
2741 - Sophie Germain prime
2744 = 14^3
2747 - sum of the first 38 primes
2753 - Sophie Germain prime
2756 - pronic number
2775 - triangular number
2791 - cuban prime
2806 - centered pentagonal number
2809 = 53^2, centered octagonal number
2819 - Sophie Germain prime, safe prime
2821 - Carmichael number
2835 - odd abundant number, decagonal number
2843 - centered heptagonal number
2850 - triangular number
2862 - pronic number
2870 - square pyramidal number
2871 - nonagonal number
2872 - tetranacci number
2879 - safe prime
2903 - Sophie Germain prime, safe prime
2914 - sum of the first 39 primes
2916 = 54^2
2924 - amicable number with 2620
2925 - magic constant of n×n magic square and n-Queens Problem for n = 18, tetrahedral number
2926 - triangular number
2939 - Sophie Germain prime
2963 - Sophie Germain prime, safe prime
2965 - greater of 2nd pair of Smith brothers
2969 - Sophie Germain prime
2970 - harmonic divisor number, pronic number
2976 - centered pentagonal number
2997 - chiliagonal number
2999 - safe prime
03-10-2013 05:06:04