This number is a prime.
(1531, 1543, 1549) is the first case of three consecutive primes (q, r, s), such that (q^3+r^3+s^3)/3 is prime. [Loungrides]
The smallest prime p such that 2p-1, 3p-2, 4p-3 are prime. [Loungrides]
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell