61

This number is a prime.

Single Curio View:   (Seek other curios for this number)
The first of five consecutive primes that can be arranged in a 3-by-3 square whose columns and rows sum to consecutive primes (199, 211, 223):
   61  67  71 

   67  71  73 

   71  73  79.
[Silva]

Submitted: 2009-08-18 21:32:33;   Last Modified: 2009-08-22 17:36:37.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell