@maoistguerillas: Graham's number is a giant number that is an upper bound for solving a certain problem in Ramsey theory. It is a very large power of three, which is written using Knuth notation. Named after Ronald Graham. It became known to the general public after Martin Gardner described it in his "Mathematical Games" column in Scientific American magazine in November 1977, where he said: "In an unpublished proof, Graham recently set a boundary so large that it holds the record as the largest number ever used in a serious mathematical proof."". In 1980, the Guinness Book of World Records #fyppppppppppppppppppppppp #viral