99999...77221 (27-digits)

This number is a prime.

                                               9999999 9933355555 7777777221

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The largest prime made up of every digit d in which primes end, repeated d times each. [Beedassy]

Submitted: 2009-03-29 15:59:35;   Last Modified: 2009-03-30 11:01:14.
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