143

This number is a composite.

Single Curio View:   (Seek other curios for this number)
The smallest composite number c such that 5^c+2 is prime. [Loungrides]

Submitted: 2011-09-28 11:33:35;   Last Modified: 2019-01-07 09:02:58.
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell