User blog:PokémonDude3333/Short definition of Graham's Number

Graham's number is defined as follows:

g1 is 3↑↑↑↑3 in up-arrow notation. g2 is 3↑...↑3 with g1 arrows. g3 is 3↑...↑3 with g2 arrows and so on.

Graham's number is g64.