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

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Consider a chess endgame where a King plus Opposite-Colored Bishops (i.e., two Bishops each residing on opposite-colored squares) versus a King. The checkmate requires, at most, 19 moves (if the side with the bishops move first).


  Submitted: 1999-09-02 18:40:00;   Last Modified: 2008-06-19 11:36:15.

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