2

This number is a prime.

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(2^2^2 + 1)^(2^2^2 + 1) - (2^2^2 + 1) - 1 is a 21 digit prime. [Luhn]

Submitted: 2002-04-19 06:11:59;   Last Modified: 2008-01-30 11:28:00.
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