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31:33
YouTube
Veritasium
The Oldest Unsolved Problem in Math
Do odd perfect numbers exist? Head to https://brilliant.org/veritasium to start your free 30-day trial, and the first 200 people get 20% off an annual premium subscription. Special thanks to our Patreon supporters! Join this list to help us keep our videos free, forever: https://ve42.co/PatreonDEB A massive thank you to Prof. Pace Nielsen for ...
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