8128 and Perfect Numbers - Numberphile

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Uploaded on Nov 28, 2011

For many years, 8128 was the largest known perfect number. But what is a perfect number?

This video features Dr James Grime. James' own YouTube channel full of maths stuff can be found at http://www.youtube.com/singingbanana

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Videos by Brady Haran

Category
- Science & Technology
License
- Standard YouTube License

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