3391382115599173

This number is a prime.

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If you place this prime in a 4-by-4 array, i.e.,
   3   3   9   1
3 8 2 1
1 5 5 9
9 1 7 3
then each row, column, and the main diagonal form a 4-digit prime in both directions. [Blanchette]

Submitted: 2000-12-19 19:23:38;   Last Modified: 2009-08-05 20:57:33.
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