Googolplexitris is E100##100##(E100)[1] using the Extensible-E system. The term was coined by Youtuber Douglas Shamlin Jr.

Approximations

Notation Approximation
BEAF {100,100,{10,{10,100}},2}
Fast-growing hierarchy \(f_{\omega2}(f_2(324))\)

Sources

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