What's special about 277777788888899? - Numberphile
16:46
Witness Numbers (and the truthful 1,662,803) - Numberphile
13:48
Squaring Primes - Numberphile
7:12
Multiplicative Persistence (extra footage) - Numberphile
18:40
The Mathematics of Winning Monopoly
33:06
Something Strange Happens When You Keep Squaring
13:32
Glitch Primes and Cyclops Numbers - Numberphile
15:21
Why π^π^π^π could be an integer (for all we know!).
14:27