5437
This number is a prime.
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The center prime in a 13-by-13 bordered magic square made solely of prime numbers by a man in jail. [Madachy]
Submitted: 2008-03-16 13:22:01; Last Modified: 2009-02-16 04:44:08.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell