13331

This number is a prime.

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Inserting any digit d between adjacent digits of this palindromic prime never produces a new prime. [De Geest]

Submitted: 1999-10-03 22:56:12;   Last Modified: 2008-01-30 17:19:27.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell