13
This number is a prime.
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13 describes its neigboring prime gaps, before and after.
There is 1 composite before it and 3 composites after it. [Honaker]
Submitted: 2010-11-29 17:45:14; Last Modified: 2010-11-30 21:54:11.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell