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

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An unistable polyhedron is stable on only one face. The simplest such polyhedron known requires 19 faces. Whether unistability is possible with fewer faces is an unsolved problem. [McCranie]


  Submitted: 2006-10-06 10:23:41;   Last Modified: 2016-07-07 05:35:10.

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