Featuring James Grime... Check out Brilliant (and get 20% off their premium service): https://brilliant.org/numberphile (sponsor) More links & stuff in full description below ↓↓↓ More James Grime videos on Numberphile: http://bit.ly/grimevideos Main paper he discusses: https://arxiv.org/abs/1602.06208v2 And the base 2, 3, 4 paper: https://arxiv.org/abs/1706.10206 Website by Christian Lawson-Perfect to run the algorithm: http://somethingorotherwhatever.com/sum-of-3-palindromes/ Applet for any base 5-10 by paper author Lewis Baxter: http://www.rnta.eu/cgi-bin/three_palindromes/pal3.py Lychrel numbers: https://www.youtube.com/watch?v=bN8PE3eljdA Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile We are also supported by Science Sandbox, a Simons Foundation initiative dedicated to engaging everyone with the process of science. https://www.simonsfoundation.org/outreach/science-sandbox/ And support from Math For America - https://www.mathforamerica.org/ NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile Subscribe: http://bit.ly/Numberphile_Sub Videos by Brady Haran Patreon: http://www.patreon.com/numberphile Numberphile T-Shirts: null Brady's videos subreddit: http://www.reddit.com/r/BradyHaran/ Brady's latest videos across all channels: http://www.bradyharanblog.com/ Sign up for (occasional) emails: http://eepurl.com/YdjL9