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Googology Wiki
Not to be confused with exitrillion.

The Exiterillion (coined by SuperJedi224) is equal to H(H(H(H(16)))), where H(x)=103x+3. It is greater than Jonathan Bowers' multillion (which is the limit of his -illion system).

Approximations in other notations

Notation Approximation
Arrow notation \(34\uparrow\uparrow5\)
Hyper-E notation \(E51\#4\)
Fast-growing hierarchy \(f^4_2(165)\)
Hardy hierarchy \(H_{\omega^{2}*4}(166)\)
Slow-growing hierarchy \(g_{\omega^{\omega^{\omega^{23} } } }(166)\)
Numbers By SuperJedi224

Fibonacci Numbers

Pound-Star Notation

Based on the Faxul

Googovipleccix family

Graham Sequence Numbers

-Illion numbers

"-Illion" numbers by SuperJedi224