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(27331 - 1)/458072843161 is prime. This number has 2196 decimal digits and set a new record in 1997 for general purpose primality proving. It required 1 month of CPU on an Alpha 400 MHz. [Mayer and Morain]

 

  Submitted: 1999-10-05 19:46:51;   Last Modified: 2009-05-26 14:42:29.



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