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Megafugagoogol is equal to googol↑↑googol using up-arrow notation[1]. It is equal to {googol,googol,2} in BEAF. The name comes from megafuga- plus googol. It is only slightly larger than a googoldex.

Unknown95387 calls this number hypergoogol.[2]


Approximation

Notation Approximation
Arrow notation \(\text{googol}\uparrow\uparrow\text{googol}\)
Fast-growing hierarchy \(f_3(\text{googol})\)
Hardy hierarchy \(H_{\omega^3}(\text{googol})\)
Slow-growing hierarchy \(g_{\varepsilon_0}(\text{googol})\)
Steinhaus-Moser Notation \((\text{googol}-1)[4]\) lower bound \(\text{googol}[4]\) upper bound
Strong array notation s(\text{googol},\text{googol},2)
Bowers Exploding Array Function \(\{ \text{googol}, \text{googol}, 2\}\)
Bird's array notation \(\{ \text{googol}, \text{googol}, 2\}\)
Hyperfactorial array notation \(\text{googol}!1\) lower bound \((\text{googol}+1)!1\) upper bound
Chained arrow notation \(\text{googol}\rightarrow\text{googol}\rightarrow 2\)

References

See also

Gar-: garone · gartwo · garthree · garfour · garfive · garsix · garseven · gareight · garnine · garten · garhundred · gargoogol · gartrialogue · gargoogolplex · gargiggol
Fz-: fzone · fztwo · fzthree · fzfour · fzfive · fzsix · fzseven · fzeight · fznine · fzten · fztwenty · fzhundred · fzthousand · fzmillion · fzgoogol · fzmilliplexion · fzgoogolplex · fzgargoogolplex · fzgargantugoogolplex · fzgiggol
Fuga-: fugaone · fugatwo · fugathree · fugafour · fugafive · fugasix · fugaseven · fugaeight · fuganine · fugaten · fugaeleven · fugahundred · fugagoogol · fugagoogolplex · fugagargoogolplex · fugagargantugoogolplex · fugagiggol
Megafuga-: megafugaone · megafugatwo · megafugathree · megafugafour · megafugafive · megafugasix · megafugaseven · megafugaeight · megafuganine · megafugaten · megafugaeleven · megafugatwelve · megafugathirteen · megafugafourteen · megafugafifteen · megafugasixteen · megafugaseventeen · megafugaeighteen · megafuganineteen · megafugatwenty · megafugathirty · megafugaforty · megafugafifty · megafugasixty · megafugaseventy · megafugaeighty · megafuganinety · megafugahundred · megafugagoogol · megafugagoogolplex · megafugagargoogolplex · megafugagargantugoogolplex
Booga-: boogaone · boogatwo · boogathree · boogafour · boogafive · boogasix · boogaten boogahundred · boogagoogol · boogagoogolplex
Gag: gagone · gagtwo · gagthree · gagfour · gagfive · gagsix · gagseven · gageight · gagnine · gagten · gaggoogol · gaggoogolplex

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