11

This number is a prime.

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11=1+2+8 and the only known values of n for which (p(n)^p(n)-1)/(p(n)-1) is prime are n=1,2,8, and 11. [Rupinski]

Submitted: 2003-01-28 05:53:09;   Last Modified: 2008-01-30 17:28:00.
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