11111...33333 (29-digits)

This number is a prime.

111111777 7755555553 3333333333

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Juxtaposition of three 11's, five 7's, seven 5's and eleven 3's is prime. 3, 5, 7, and 11, are four consecutive primes. [De Geest]

Submitted: 2004-02-07 03:43:39; Last Modified: 2008-01-30 17:28:00.