8128 and Perfect Numbers - Numberphile

From the creator

For many years, 8128 was the largest known perfect number. But what is a perfect number? More links & stuff in full description below ↓↓↓ This video features Dr James Grime. James' own YouTube channel full of maths stuff can be found at http://www.youtube.com/singingbanana NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile Subscribe: http://bit.ly/Numberphile_Sub Videos by Brady Haran Patreon: http://www.patreon.com/numberphile Brady's videos subreddit: http://www.reddit.com/r/BradyHaran/ Brady's latest videos across all channels: http://www.bradyharanblog.com/ Sign up for (occasional) emails: http://eepurl.com/YdjL9 Numberphile T-Shirts: https://teespring.com/stores/numberphile Other merchandise: https://store.dftba.com/collections/numberphile

Published 2011-11-28 · Watch on YouTube ↗
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