How Big is Graham's Number? (feat Ron Graham)by Numberphile   3 years ago

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The magnitude of Graham's Number is difficult to fathom - Ron Graham himself attempts to explain.
WHAT IS the number: http://youtu.be/HX8bihEe3nA
Extra footage: http://youtu.be/rGWuimr5CGQ
Our original Graham's Number video: http://youtu.be/XTeJ64KD5cg

Any errors in this video are mine (Brady's) in editing... For example 3^^^3 is actually even bigger than I say... Graham's Number is just too big for my small brain!
See an improved explanation at: http://youtu.be/txajrEOTkuY

Wikipedia page on Graham's Number: http://en.wikipedia.org/wiki/Graham's_number
And the arrow notation used here: http://en.wikipedia.org/wiki/Knuth%27s_up-arrow_notation

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