Prime Curios!: 3391382115599173

3391382115599173
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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.