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

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There are 53 distinct ways of constructing hole-free pentagonal shapes with the seven pieces of a tangram. [Beedassy]

 

  Submitted: 2010-12-05 06:59:47;   Last Modified: 2010-12-05 20:37:37.



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