Practical Numbers – Numberphile

From Numberphile.

Featuring Dr James Grime. More links & stuff in full description below ↓↓↓


Practical Numbers (AKA panarithmic numbers) on the OEIS:

James Grime:
His YouTube channel:
More James on Numberphile:

Numberphile is supported by the Simons Laufer Mathematical Sciences Institute (formerly MSRI):

We are also supported by Science Sandbox, a Simons Foundation initiative dedicated to engaging everyone with the process of science.

And support from The Akamai Foundation – dedicated to encouraging the next generation of technology innovators and equitable access to STEM education –

Numberphile on Facebook:
Numberphile tweets:

Videos by Brady Haran
Editing and animation by Pete McPartlan

Numberphile T-Shirts and Merch:

Brady’s videos subreddit:

Brady’s latest videos across all channels:

Sign up for (occasional) emails:

With thanks to Patrons, including:
Juan Benet
Jeff Straathof
Ben Delo
Ken Baron
Andy B
Michael Dunworth
Yana Chernobilsky
James Bissonette
Jubal John
Jeremy Buchanan
Steve Crutchfield
Ben White
Andrei M Burke
RAD Donato
Matthew Schuster
Ron Hochsprung
Ubiquity Ventures
John Zelinka
Kannan Stanz
Heather Liu
Tracy Parry
Ian George Walker
Bernd Sing
Alfred Wallace
Alex Khein
Doug Hoffman
John Loach