5231

This number is a prime.

The prime number 5231 is of the quadratic form 2x^2-4x+31, where x = 52. [Sandri]

The smallest p > 5 such that both (p, p+2, p+6) and (prime(p), prime(p+1), prime(p+2)) are prime triples: both (5231, 5233, 5237) and (51131, 51133, 51137) are prime triples, where prime(5231) = 51131, prime(5233) = 51137. [Yosei]