2969

This number is a prime.

2969 = 55*55 - 55 - 1; 2969 is both a Sophie Germain prime and a twin prime; 2969 is a non-Ramanujan prime that is the sum of 3 cubes of distinct positive integers: 8^3 + 9^3 + 12^3 = 2969. [Noll]