Watch: a number too big to write down, explained

Graham's number, once the largest number ever used in a mathematical proof, and how it is built.

— Numberphile, Graham's Number - Numberphile — YouTube video

One credited idea per card. No filler. Swipe the rest in Savvy.

Keep swiping — it's free Works right in your browser. No app store needed.

More Puzzles

All Puzzles cards →
More from Numberphile →

Five ideas worth knowing, every week

The week's best cards and a puzzle, credited as always. Free, unsubscribe any time.