193
This number is a prime.
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The only odd prime p known for which 2 is not a primitive
root of 4p^2 + 1.
Submitted: 2002-07-24 09:36:15; Last Modified: 2009-02-22 03:33:42.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell