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Old 2003-04-13, 20:53   #5
jocelynl
 
Sep 2002

10616 Posts
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After more evaluation,

if one is not prime then the other one can be prime. So far I found no mersenne prime in that chaine.
Can there be a mersenne prime M with
N={1,2,3.....}
P=(2^N*5+2^N-1)
M=2^P-1


Joss
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