2000 (number)

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 -