Numberphile is an educational YouTube channel featuring videos that explore topics from a variety of fields of mathematics. In the early days of the channel, each video focused on a specific number, but the channel has since expanded its scope, featuring videos on more advanced mathematical concepts such as Fermat's Last Theorem and the Riemann hypothesis. The videos are produced by Brady Haran, a former BBC video journalist and creator of Periodic Videos, Sixty Symbols, and several other YouTube channels. Videos on the channel feature several university professors, math communicators, and famous mathematicians.

Numberphile Logo.png
YouTube information
Created byBrady Haran
Presented by
Years activeSeptember 15, 2011 (2011-09-15) – present
GenreEducational entertainment
Subscribers3.76 million (Numberphile)
227 thousand (Numberphile2)[1]
Total views569 million (Numberphile)
15.4 million (Numberphile2)[1]
Associated acts
YouTube Silver Play Button 2.svg 100,000 subscribers
YouTube Gold Play Button 2.svg 1,000,000 subscribers

Updated: 1 May 2021

In 2018, Haran released a spin-off audio podcast titled The Numberphile Podcast.[2]

YouTube channelEdit

The Numberphile YouTube channel was started on September 15, 2011. Most videos consist of Haran interviewing an expert on a number, mathematical theorem, or other mathematical concept. The expert usually draws out their explanation on a large piece of brown paper and attempts to make the concepts understandable to the average, non-mathematician viewer. It is supported by the Mathematical Sciences Research Institute (MSRI) and Math for America.[3][4] Haran also runs the "Numberphile2" channel, which includes extra footage and further detail than the main channel.[5]

The channel was nominated for a Shorty Award in Education in 2016.[6] The New York Times has said, "At Numberphile, mathematicians discourse, enthusiastically and winningly, on numbers".[7]


The channel has featured a wide array of mathematicians, computer scientists, scientists, and science writers, including:[8]

The Numberphile PodcastEdit

The Numberphile Podcast
Hosted byBrady Haran
Length25–75 minutes
No. of episodes33 (As of 7 March 2021)[23]
Original release4 November 2018 (2018-11-04) – present
Related shows

Haran started a podcast titled The Numberphile Podcast in 2018 as a sister project. The podcast more heavily focus on the lives and personalities of some of the subjects of the videos.[24]

No.TitleRun TimeOriginal release date
1"The Hope Diamond (with 3Blue1Brown)"1:03:204 November 2018 (2018-11-04)
2"Fermat’s Last Theorem (with Ken Ribet)"48:2221 November 2018 (2018-11-21)
3"Delicious Problems (with Hannah Fry)"52:0016 December 2018 (2018-12-16)
4"The Klein Bottle Guy (with Cliff Stoll)"59:088 January 2019 (2019-01-08)
5"The Math Storyteller (with Simon Singh)"1:11:3611 February 2019 (2019-02-11)
6"Parker Square (with Matt Parker)"52:0424 February 2019 (2019-02-24)
7"A Proof in the Drawer (with David Eisenbud)"1:15:207 April 2019 (2019-04-07)
8"The Offensive Lineman (with John Urschel)"36:4314 May 2019 (2019-05-14)
9"The Singing Banana (with James Grime)"1:13:2120 May 2019 (2019-05-20)
10"The C-Word (talking Calculus with Steven Strogatz)"51:1717 June 2019 (2019-06-17)
11"The Number Collector (with Neil Sloane)"55:3614 August 2019 (2019-08-14)
12"Fame and Admiration (with Timothy Gowers)"54:2522 October 2019 (2019-10-22)
13"The Badly Behaved Prime (with James Maynard)"41:3810 November 2019 (2019-11-10)
14"Coffin Problems (with Edward Frenkel)"1:21:393 December 2019 (2019-12-03)
15"Champaign Mathematician (with Holly Krieger)"40:0013 December 2019 (2019-12-13)
16"Gondor Calls for Aid (with Kit Yates)"28:1831 March 2020 (2020-03-31)
17"Crystal Balls and Coronavirus (with Hannah Fry)"44:5510 April 2020 (2020-04-10)
18"The Legendary John Conway (1937-2020)"38:0113 April 2020 (2020-04-13)
19"The Accidental Streamer (with 3Blue1Brown)"33:0519 April 2020 (2020-04-19)
20"The Parker Quiz (with Matt Parker)"55:3421 May 2020 (2020-05-21)
21"The Happy Twin (with Ben Sparks)"1:02:2127 May 2020 (2020-05-27)
22"The Numeracy Ambassador (with Simon Pampena)"1:00:151 July 2020 (2020-07-01)
23"The Mathematical Showman - Ron Graham (1935-2020)"39:0213 July 2020 (2020-07-13)
24"The Third Cornet (with Katie Steckles)"59:4924 July 2020 (2020-07-24)
25"Why Did the Mathematician Cross the Road? (with Roger Penrose)"1:05:168 August 2020 (2020-08-08)
26"The Importance of Numbers (with Tim Harford)"47:2912 September 2020 (2020-09-12)
27"Nursery Rhymes and Numbers (with Alan Stewart)"54:065 October 2020 (2020-10-05)
28"Quiz Shows and Math Anxiety (with Bobby Seagull)"1:24:2623 October 2020 (2020-10-23)
29"Club Automatic (with Alex Bellos)"54:1725 November 2020 (2020-11-25)
30"Why Study Mathematics (with Vicky Neale)"45:118 December 2020 (2020-12-08)
31"Statistics and Saving Lives (with Jennifer Rogers)"55:5011 December 2020 (2020-12-11)
32"Rockstar Epidemiologists (with Adam Kucharski)"45:102 February 2021 (2021-02-02)
33"The High Jumping Cosmologist (with Katie Mack)"54:5325 February 2021 (2021-02-25)
34"Beauty in the Messiness (with Philip Moriarty)"39:053 April 2021 (2021-04-03)
35"The Naked Mathematician (with Tom Crawford)"58:1231 May 2021 (2021-05-31)


  1. ^ a b "About Numberphile". YouTube.
  2. ^ "The Numberphile Podcast". Brady Haran. Retrieved 2018-12-25.
  3. ^ Numberphile sponsors Mathematical Sciences Research Institute
  4. ^ Numberphile Nominated in Education 8th Annual Shorty Awards
  5. ^ Haran, Brady. "Numberphile2". YouTube. Retrieved 17 October 2019.
  6. ^ The 8th Annual Shorty Award Alexis Joy, January 19, 2016
  7. ^ Genres Stretch, for Better and Worse, as YouTube Takes On TV By Mike Hale, New York Times, April 24, 2012
  8. ^ Guest speakers on Numberphile MSRI
  9. ^ Haran, Brady. "All in Federico Ardila". Numberphile.
  10. ^ "Johnny Ball – Russian Multiplication – Numberphile". YouTube. Retrieved 30 November 2020.
  11. ^ Haran, Brady. "Tom Crawford on Numberphile". YouTube.
  12. ^ Haran, Brady. "Zsuzsanna Dancso on Numberphile". YouTube.
  13. ^ Haran, Brady. "James Grime on Numberphile". YouTube.
  14. ^ Haran, Brady. "Ron Graham on Numberphile". YouTube.
  15. ^ Haran, Brady. "All in Edmund Harriss". Numberphile.
  16. ^ Haran, Brady. "Gordon Hamilton on Numberphile". YouTube.
  17. ^ Haran, Brady. "All in Tony Padilla". Numberphile.
  18. ^ Haran, Brady. "Simon Pampena on Numberphile". YouTube.
  19. ^ Haran, Brady. "Henry Segerman on Numberphile". YouTube.
  20. ^ Haran, Brady. "Ben Sparks on Numberphile". YouTube.
  21. ^ Haran, Brady. "Katie Steckles on Numberphile". YouTube.
  22. ^ Haran, Brady. "Cedric Villani on Numberphile". YouTube. Retrieved 2019-11-05.
  23. ^ "Podcast". Numberphile. Retrieved 7 March 2021.
  24. ^ Haran, Brady. "The Numberphile Podcast". Brady Haran. Retrieved 10 September 2019.

External linksEdit