2161
This number is a prime.
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The first prime after 3 for which n*10^n+1 is also prime (a
generalized Cullen prime).
Submitted: 2009-11-28 11:54:59; Last Modified: 2009-11-29 00:44:42.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell