12255...55221 (25-digits)

This number is a prime.

                                                 12255 5558888188 8855555221

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A curious dihedral prime with 5^2 digital length and 5^3 digital sum. [Patterson]

Submitted: 2003-04-05 03:45:58;   Last Modified: 2008-01-30 17:28:00.
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