40898...00001 (867-digits)

This number is a prime.

+ The smallest prime number that can be written as 2a^2+1, or 3b^3+1 or 5c^5+1 or 7d^7+1. [Hartley]

Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell