31111...11113 (127-digits)
This number is a prime.
3111111 1111111111 1111111111 1111111111 1111111111 1111111111
1111111111 1111111111 1111111111 1111111111 1111111111 1111111111 1111111113
Just showing those entries submitted by 'Patterson': (Click here to show all)
This the 5th number of this form. Note that it has a Mersenne prime number of digits and a palindromic prime digital sum. [Patterson]
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