22222...22221 (121-digits)
This number is a prime.
2 2222222222 2222222222 2222222222 2222222222 2222222222
2222222222 2222222222 2222222222 2222222222 2222222222 2222222222 2222222221
Just showing those entries submitted by 'Patterson': (Click here to show all)
A near rep-digit prime whose sum of digits is also prime. [Patterson]
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