7776665554443332221111

This number is a prime.

                                                    77 7666555444 3332221111

Just showing those entries submitted by 'Patterson': (Click here to show all)

+ Three 7's, followed by three 6's, followed by three 5's, followed by three 4's, followed by three 3's, followed by three 2's, followed by three 1's, followed by a 1 is prime. [Patterson]

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