101
This number is a prime.
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The 5th centered decagonal number (numbers of the
form 5(n^2 - n) + 1). [Green]
Submitted: 2009-08-12 02:41:08; Last Modified: 2009-08-12 17:12:01.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell