Uploaded June 2024 | Updated September 2026, 2 weeks ago

---

Featuring Dr James Grime on Erdős–Woods Numbers. More links & stuff in full description below ↓↓↓

James Grime: singingbanana.com
More James on Numberphile: bit.ly/grimevideos

Erdős–Woods Numbers in the OEIS: oeis.org/A059756 (and see links to other related sequences, including oeis.org/A059757)

Brown Numbers: youtube.com/watch?v=-Djj6pfR9KU
Imaginary Erdős Numbers: youtube.com/watch?v=izdZPx89ph4

Patreon: patreon.com/numberphile

Numberphile is supported by Jane Street. Learn more about them (and exciting career opportunities) at: bit.ly/numberphile-janestreet

We're also supported by the Simons Laufer Mathematical Sciences Institute (formerly MSRI): bit.ly/MSRINumberphile

Our thanks also to the Simons Foundation: simonsfoundation.org

NUMBERPHILE
Website: numberphile.com
Numberphile on Facebook: facebook.com/numberphile
Numberphile tweets: twitter.com/numberphile
Subscribe: bit.ly/Numberphile_Sub

Video by Brady Haran and Pete McPartlan

Numberphile T-Shirts and Merch: teespring.com/stores/numberphile

Brady's videos subreddit: reddit.com/r/BradyHaran

Brady's latest videos across all channels: bradyharanblog.com

Sign up for (occasional) emails: eepurl.com/YdjL9