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How Big is Graham's Number? (feat Ron Graham)

Numberphile · interview · Watch on YouTube

Recreational & visual mathPure mathematics

What it is

Numberphile talks with mathematician Ron Graham about the magnitude of Graham's number, building up from arrow notation to show how impossibly large it is. It is part of a series of videos on this number.

Why Hacker News recommends it

HN commenters recommend it for hearing Graham himself and for its clear introduction to up-arrow notation and enormous numbers.

  • 4 people recommended it
  • 5 different months
  • 3 strong recommendations
  • first 2014, last 2024

What HN commenters said

  1. “Big big numbers are really, really cool!”

    Mind-blowing videos on arrow notation and Graham's number

    prezjordan, 2014-12 · Strong recommendation · in “Prime Gap Grows After Decades-Long Lull”

  2. “If math can make you feel awe, you've got to watch the Numberphile series on very big numbers.”

    Part of Numberphile series on enormous numbers that inspire awe

    jiggawatts, 2024-05 · Strong recommendation · in “A Trial HIV Vaccine Triggered Elusive and Essential Antibodies in Humans”

  3. “This video explains it pretty well”

    Explains up arrow notation well

    dahart, 2019-11 · Recommendation · in “Inventing an Operation to Solve x^x = y (2000)”

  4. “There's an awesome video with Ron Graham himself on Numberphile (YouTube)”

    Numberphile video with Ron Graham himself

    ObiWanFrijoles, 2022-07 · Recommendation · in “The Fourth Operation: What Comes After Exponentiation”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: graham's number, up-arrow notation, ron graham, numberphile, combinatorics

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