The hyper-exitillion, coined by SuperJedi224, is equal to H(1616), where H(n) equals 103x+3 (the "exit" part is derived from "hexit", which is short for "hexidecimal digit")[1]

It has more than 1019 digits.


Notation Approximation
Scientific notation 10^{10^{20}}
Up-arrow notation 16\uparrow\uparrow3
Hyper-E notation E20\#2
Fast-growing hierarchy f_{2}(f_{2}(61))
Hardy hierarchy H_{\omega^{2}*2}(61)
Slow-growing hierarchy g_{\omega^{\omega^{11}}}(61)


  1. -illions - Almost infinite

See alsoEdit

Numbers By SuperJedi224

Fibonacci Numbers

Pound-Star Notation

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