There is a new "largest known prime number".
Extra footage: http://youtu.be/o0ZOs7sMS7k
More on Mersenne Primes: http://www.youtube.com/watch?v=PLL0mo5rHhk
Perfect Numbers: http://www.youtube.com/watch?v=ZfKTD5lvToE
Graham's Number: http://www.youtube.com/watch?v=XTeJ64KD5cg
This video features Dr Tony Padilla from the University of Nottingham.
Numberphile on Facebook: http://www.facebook.com/numberphile
Numberphile tweets: https://twitter.com/numberphile
Google Plus: http://bit.ly/numberGplus
Videos by Brady Haran
Tagged under: prime,prime number,mersenne prime,numberphile,largest prime
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