999779999159200499899

This number is a prime.

                                                     9 9977999915 9200499899

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The final 21 digits of 99^99 have 12 nines and form a prime. [Merickel]

Submitted: 2010-02-01 21:02:00;   Last Modified: 2010-02-02 07:36:45.
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