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31 and Mersenne Primes - Numberphile

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Uploaded on Jan 9, 2012

31 is one of the special Mersenne Prime numbers. They are related to perfect numbers. See our perfect number video at http://www.youtube.com/watch?v=ZfKTD5...

This video features Dr James Grime. All our presenters are featured at http://www.numberphile.com/team/index...

Website: http://www.numberphile.com/
Follow Numberphile on Facebook at http://www.facebook.com/numberphile
Numberphile tweets at https://twitter.com/numberphile
Videos by Brady Haran

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