31111...11113 (127-digits)

This number is a prime.

              3111111 1111111111 1111111111 1111111111 1111111111 1111111111
1111111111 1111111111 1111111111 1111111111 1111111111 1111111111 1111111113

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This the 5th number of this form. Note that it has a Mersenne prime number of digits and a palindromic prime digital sum. [Patterson]

Submitted: 2003-05-27 11:56:16;   Last Modified: 2008-01-30 11:28:00.
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