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Old 2006-11-24, 22:57   #5
Citrix
 
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Jun 2003

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Quote:
Originally Posted by T.Rex View Post
Oh, yes!
But what a strange idea to write the number in a way different than his definition !
338707 is prime and 1354828 is the first even n satisfying n*2^n+1 .
T.
The challenge is to find p*2^p+1 so this does not qualify as a solution.
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