131
This number is a prime.
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The smallest prime that remains prime when the end digits
(on both sides) are repeated once (i.e., 11311 is also prime).
Submitted: 2009-06-11 01:05:53; Last Modified: 2009-06-11 11:03:08.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell