65

This number is a composite.

Single Curio View:   (Seek other curios for this number)
665 - 5 is the smallest prime of the form ac - b, where b = a - 1. Note that c is the concatenation of a and b. [Kulsha]

Submitted: 1999-09-04 18:48:26;   Last Modified: 2008-01-30 17:28:00.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell