Numberphile is an educationalYouTube channel featuring videos that explore topics from a variety of fields of mathematics.[2][3] In the early days of the channel, each video focused on a specific number, but the channel has since expanded its scope,[4] featuring videos on more advanced mathematical concepts such as Fermat's Last Theorem, the Riemann hypothesis[5] and Kruskal's tree theorem.[6] The videos are produced by Brady Haran, a former BBC video journalist and creator of Periodic Videos, Sixty Symbols, and several other YouTube channels.[7] Videos on the channel feature several university professors, maths communicators and famous mathematicians.[8][9]
In 2018, Haran released a spin-off audio podcast titled The Numberphile Podcast.[10]