44455...99999 (33-digits)

This number is a prime.

444 5555666667 7777788888 8899999999

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A prime containing 4-1 fours, 5-1 fives, 6-1 sixes, etc. [Mendes]

Submitted: 2005-12-19 19:03:36; Last Modified: 2008-01-30 17:28:00.