99999...99999 (53-digits)

This number is a prime.

999 9999999999 9999999999 9998999999 9999999999 9999999999

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The smallest palindromic maxsum prime. A "maxsum prime" is a n-digit prime whose sum of digits is the maximum possible. [Green]

Submitted: 2010-05-26 05:49:13; Last Modified: 2010-05-26 22:51:25.