13313...31331 (49-digits)

This number is a prime.

                       133133133 1331331331 3313313313 3133133133 1331331331

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My 11-year old son's first repeating pattern prime. [Carson]

Submitted: 2004-03-14 13:44:05;   Last Modified: 2008-01-30 11:28:00.
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