
The Numberphile Podcast
Interviews with people who love numbers and mathematics. Hosted by Brady Haran, maker of the Numberphile series on YouTube.
Latest episodes

Sep 12, 2020 • 47min
The Importance of Numbers - with Tim Harford
Economist Tim Harford on the importance of numbers and statistics.
Tim Harford's website has links to most of his projects
Tim's book How to Make the World Add Up - signed copies on Maths Gear
Tim Harford books on Amazon
Tim's video on Numberphile
Support Numberphile on Patreon
With thanks to
MSRI

Aug 8, 2020 • 1h 5min
Why Did The Mathematician Cross The Road? - with Roger Penrose
Sir Roger Penrose is one of the biggest names in mathematics AND physics. Here he talks about sibling rivalry, Stephen Hawking, having ideas, and toilet paper.
Roger Penrose Wikipedia
Roger Penrose books - Amazon
The Order of Merit
The Theory of Everything - 2014 movie about Stephen Hawking
Penrose Tiling
Penrose Toilet Paper
The San Francisco Transit Center with its Penrose Tiling
With thanks to
MSRI
Support us on Patreon

Jul 23, 2020 • 60min
The Third Cornet - with Katie Steckles
Dr Katie Steckles is a mainstay of the mathematics communications scene and a regular in our videos. Here she discusses her life at school, university, and now as a freelance maths communicator. Plus life as a pirate.
Katie Steckles website
Follow Katie on Twitter
Talking Maths in Public
Check out Katie's videos on Numberphile
Support this podcast - and our videos - via Patreon
With thanks to
MSRI
Apologies for the change in audio quality part way through - we had technical issues!
Podcast Transcripts

Jul 13, 2020 • 39min
The Mathematical Showman - Ron Graham (1935-2020)
Tributes to mathematician Ronald Graham - a man of many talents.
Our guests include Steve Butler, Tom Leighton, and Joe Buhler
Ron Graham 'fan' webpage
Ron Graham papers
Ron Graham on Numberphile
A collection of Numberphile videos about Graham's Number
Tom Leighton written tribute to Ron
Steve Butler tribute to Ron

Jul 1, 2020 • 1h
The Numeracy Ambassador - with Simon Pampena
Speaking with Simon Pampena, Australia's National Numeracy Ambassador who once dreamed of being a Jedi.
Simon Pampena website
Videos with Simon on Numberphile
Epic Circles and The Legend of Question Six
Simon on Twitter
Beyond 2000
The Malls' Balls are also discussed in our Quiz Episode with Matt Parker
With thanks to
MSRI
Support us on Patreon - we appreciate your help
The Patron Wall of Fame
You can also catch this episode on the Numberphile2 YouTube channel

May 27, 2020 • 1h 2min
The Happy Twin - with Ben Sparks
Our guest is Ben Sparks - teacher, math populariser, and Numberphile regular.
Ben Sparks website
Videos with Ben on Numberphile
Video of Tim Sparks performing Your Own Idea - Nikko Fir and here's Tim's website
A pic of Ben and Tim
The Bill Clinton picture
Ben's Mandelbrot Video on Numberphile
Advanced Mathematics Support Programme
Talking Maths in Public
With thanks to
MSRI
Support us on Patreon - we appreciate your help
The Patron Wall of Fame

May 21, 2020 • 56min
The Parker Quiz - with Matt Parker
Matt Parker takes a quiz prepared by Brady. The YouTube version of this quiz contains a few visuals.
Do you like quizzes and puzzles and interactive courses? Then definitely check out episode sponsor Brilliant - and go to brilliant.org/numberphile for 20% off a premium subscription
Many of the links below contain QUIZ SPOILERS.
Matt Parker is standupmaths - his website has links to most stuff
Matt's books on Amazon
Matt's first appearance on this podcast
Matt's videos on Numberphile
Terry Tao on Numberphile
Good Will Hunting which is directed by Gus Van Sant
Two Numberphile videos about Good Will Hunting are here and here - featuring James Grime
Newton, Euler, Gauss, Ramanujan, and Turing
Newton videos from Brady's Objectivity channel
Millennium Problems
Festival of The Spoken Nerd, featuring Matt with Steve Mould and Helen Arney
Steve and Matt's YouTube channels
The Parker Square
The video which created the Parker Square legend
Parker Square T-Shirt
Bonnie Parker
Matthew Parker
Ernest Parker
Latin/Euler Squares on Numberphile
Parker Solar Probe
Lucie Green's PhD thesis
Edna Parker
Professor's Cube
Superbowl 50
Luc Longley
West Coast Eagles win the 1992 AFL Grand Final
The Malls Balls
Australia's Highest Point
And the lowest
Akshay Venkatesh
With thanks to MSRI

Apr 19, 2020 • 33min
The Accidental Streamer - with 3blue1brown
Grant Sanderson from 3blue1brown returns to the podcast to talk about live-streaming lessons, tracing coronavirus, and a technical mishap.
Support this podcast and Numberphile on Patreon
Grant's channel - 3blue1brown
Grant's first live lesson
Exponential Growth - 3 blue1brown
Simulating an epidemic - 3blue1brown
The Coronavirus Curve with Ben Sparks - Numberphile
Itempool
Matt Parker
Ben Eater
Nicky Case Tweet
The Accidental Stream
Grant's eye video on Objectivity
Objectivity channel

Apr 13, 2020 • 38min
The Legendary John Conway (1937-2020)
We pay tribute to John Horton Conway - with clips from the man himself, plus contributions from Siobhan Roberts, David Eisenbud, Colm Mulcahy and Tony Padilla.
Genius at Play by Siobhan Roberts
John Conway Numberphile Playlist
Does John Conway hate his Game of Life?
Inventing Game of Life
Life, Death and the Monster
Look-and-Say Numbers
Monster Group
Siobhan Roberts
David Eisenbud
Colm Mulcahy
Tony Padilla

Apr 10, 2020 • 45min
Crystal Balls and Coronavirus - with Hannah Fry
Dr Hannah Fry made a film two years ago which predicted the coronavirus pandemic with chilling accuracy.
Dr Hannah Fry's website - links to all her stuff
The BBC Contagion special on iPlayer
If it doesn't work on iPlayer, this is a version I found on YouTube!?
Numberphile video about the SIR curve with Ben Sparks
Numberphile discusses coronavirus mathematics with Kit Yates
False Positives on Numberphile with Lisa Goldberg
PAPER: Contacts in context: large-scale setting-specific social mixing matrices from the BBC Pandemic project
PAPER: Contagion! The BBC Four Pandemic – The model behind the documentary
BBC Horizon Coronavirus Special - the more recent film Hannah made with the Beeb
RI Christmas Lectures 2019: Secrets and lies
Mathematician/epidemiologist Adam Kucharski on Twitter
With thanks to
MSRI
Support us on Patreon
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