Epic Circles - Numberphile
14:22
Funny Fractions and Ford Circles - Numberphile
38:28
A Miraculous Proof (Ptolemy's Theorem) - Numberphile
18:36
Game of Cat and Mouse - Numberphile
34:06
Matt Parker Reacts to Magic Squares of Squares - Numberphile
18:20
Gabriel's Horn Paradox - Numberphile
13:32
Glitch Primes and Cyclops Numbers - Numberphile
33:39
Magic Squares of Squares (are PROBABLY impossible) - Numberphile
22:56