Message Forum: Re: Perfect numbers

Re: Perfect numbers

Posted By: codeman38, on host 24.23.210.87
Date: Tuesday, December 18, 2001, at 18:56:18
In Reply To: Re: Perfect numbers posted by Lucky Wizard on Tuesday, December 18, 2001, at 18:08:27:

> 1. Is it possible for the exponent in a Mersenne number to be prime without the Mersenne number itself being prime?

Yes. 2^11-1 = 2047 = 23*89.

-- codeman"noted the absence of 11 from the list given on the site you linked"38

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Message:	> > 1. Is it possible for the exponent in a Mersenne number to be prime without the Mersenne number itself being prime? > > Yes. 2^11-1 = 2047 = 23*89. > > -- codeman"noted the absence of 11 from the list given on the site you linked"38
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