11111...11111 (121-digits)
This number is a prime.
1 1111111111 1111111111 1111111111 1111111111 1111111777
1111111175 7111111117 7711111111 1111111111 1111111111 1111111111 1111111111
Just showing those entries submitted by 'Patterson': (Click here to show all)
The smallest zero-free square-congruent prime of order 11. [Patterson]
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