251 (number)

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251 is the natural number between 250 and 252. It is also a prime number.

List of numbers — Integers ← 0 100 200 300 400 500 600 700 800 900 →
Ordinal	Two hundred [and] fifty-one
Cardinal	251st
Factorization	prime number

[edit] In mathematics

251 is a regular prime, an Eisenstein prime, a Chen prime, a Gaussian prime, a Sophie Germain prime, a Higgs prime, and a sexy prime.

251 is also sum of three consecutive primes (79 + 83 + 89) and sum of seven consecutive primes (23 + 29 + 31 + 37 + 41 + 43 + 47).

251 is also the smallest number that can be written as the sum of three cubes in two ways (1^3 + 5^3 + 5^3 and 2^3 + 3^3 + 6^3).