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Hello there.

This is Numberphile. We mainly post videos about mathematics and just numbers in general.

Something special about 399 (and 2015)

Something special about 399 (and 2015)

It is the lowest Lucas-Carmichael Number... Featuring Ed Copeland.

More about Ed's real work: http://bit.ly/CopelandGoesLong

Rock Paper LIZARDS

Rock Paper LIZARDS

How to always win at Dots and Boxes

How to always win at Dots and Boxes