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Hi. This article, though clarifying Knuth's "Arrow Notation", doesn't get you to Graham's Number. Graham went one step further. To get to G (Graham's Number), one starts with 3^^^^3 (a clearly demonstratedly STOOPID BIG number. However, that number is called "g1". Now, take 3^...^3, where "^...^" is g1 ^'s. That is "g2". Following the pattern, "g3" is made of "g2" ^'s. Are you sitting down? Graham's Number is g64!!!