668273

This number is a prime.

+ The number of solutions to the 26-variable equation: 1A + 2B + 3C + 4D + 5E + ... + 26Z = 1, where each variable A, B, C, ..., Z, is either +1 or -1. [Post]

Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell