16911...11111 (172-digits)

This number is a prime.

16 9111111111 1111111111 1111111111
1111111111 1111111111 1111111111 1111111111 1111111111 1111111111 1111111111
1111111111 1111111111 1111111111 1111111111 1111111111 1111111111 1111111111

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The smallest prime greater that a googol formed from a square n followed by n 1’s, (n=169). [Loungrides]

Submitted: 2010-06-29 07:14:07; Last Modified: 2018-04-26 11:04:33.