18084...26887 (73-digits)

This number is a prime.

                                                                         180
8422353177 3495645465 1203551253 0001279481 2598542488 6045434898 9451026887

+ A prime factor of 2^1181-1. Note that the digit-length of the factor and 1181 are emirps.

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