12917...81863 (31-digits)

This number is a prime.

1 2917138717 7538791028 9126481863

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The prime 1291713871775387910289126481863 = (3^65 reversed)/3^3. [Post]

Submitted: 2004-10-08 15:10:21; Last Modified: 2008-01-30 17:28:00.