The book is now available! 431
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2*3*5*...*prime(431-1) = prime(431)-1 (mod prime(431)). Note that 431 is the largest known prime with this property and there exist only one other known such prime. [Firoozbakht]


  Submitted: 2009-12-07 21:38:55;   Last Modified: 2009-12-09 21:14:43.

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