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2^(2+3*5*7)+3^(3+2*5*7)+5^(5+2*3*7)+7^(7+2*3*5) is prime. Note also that all the exponents (37, 47, 73, and 107) are also prime. [Rupinski]

 

  Submitted: 2002-08-31 16:40:10;   Last Modified: 2008-08-01 07:43:33.



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