691

This number is a prime.

Single Curio View: (Seek other curios for this number)

691 = 6!-6#+1. [Galliani]

Submitted: 2019-04-14 10:55:11; Last Modified: 2019-04-14 12:05:55.

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