688
This number is a composite.
Single Curio View: (Seek other curios for this number)
(688-1)*2^688-1 is prime. [Opao]
Submitted: 2003-12-09 02:04:19; Last Modified: 2008-01-30 17:28:00.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell