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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

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After removing two opposing corner squares on a chessboard it is impossible to arrange 31 dominoes in such a way that they cover all the remaining squares.


  Submitted: 2004-08-02 22:42:52;   Last Modified: 2008-02-11 14:43:54.

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