The book is now available! 19973...37991 (25-digits)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

                                                 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 15:41:58;   Last Modified: 2010-06-03 11:47:44.

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