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Old 2006-11-24, 21:37   #4
T.Rex
 
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Feb 2004
France

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Quote:
Originally Posted by smh View Post
338707*2^1354830+1 = 1354828*2^1354828+1
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.
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