117643

This number is a prime.

Just showing those entries submitted by 'Loungrides': (Click here to show all)

+ The smallest emirp p of form 7^n-n, (case n=6), i.e., 7^6-6=117643. [Loungrides]

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