19973...37991 (25-digits)

This number is a prime.

19973 9240197879 1042937991

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Arrange this palindromic prime into a 5-by-5 array and each row, column, and main diagonal will form a reversible prime. [Blanchette]

Submitted: 2001-01-07 21:41:58; Last Modified: 2010-06-03 16:47:44.