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In 1732, Euler discovered the prime factorization of F5 (4294967297 = 641*6700417), thus contradicting Fermat's claim that all numbers of the form (2^(2^n))+1 were prime.

 

  Submitted: 2003-12-09 17:03:45;   Last Modified: 2008-01-30 11:28:00.



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