32777...77777 (34-digits)

This number is a prime.

3277 7777777777 7777777777 7777777777

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The largest prime less than a googol consisting of a number n followed by n 7's. [Loungrides]

Submitted: 2010-03-01 08:21:37; Last Modified: 2010-03-01 13:01:16.