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Googology Wiki

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 is equal to 1055,340,232,221,128,654,851 in the short scale.


Notation Lower bound Upper bound
Scientific notation \(1\times10^{55\,340\,232\,221\,128\,654\,851}\)
Arrow notation \(10\uparrow55\,340\,232\,221\,128\,654\,851\)
Down-arrow notation \(572\downarrow\downarrow8\) \(263\downarrow\downarrow9\)
Steinhaus-Moser Notation 15[3][3] 16[3][3]
Copy notation 4[4[20]] 5[5[20]]
Chained arrow notation \(10\rightarrow55\,340\,232\,221\,128\,654\,851\)
Taro's multivariable Ackermann function A(3,A(3,64)) A(3,A(3,65))
Pound-Star Notation #*((1))*(4,1)*7 #*((1))*(3,0,4)*3
BEAF {10,55340232221128654851}
Hyper-E notation E55,340,232,221,128,654,851
Bashicu matrix system (0)(1)[7] (0)(1)[8]
Hyperfactorial array notation (20!)! (21!)!
Fast-growing hierarchy \(f_2(f_2(61))\) \(f_2(f_2(62))\)
Hardy hierarchy \(H_{\omega^22}(61)\) \(H_{\omega^22}(62)\)
Slow-growing hierarchy \(g_{\omega^{\omega^{\omega+9}5+\omega^{\omega+8}5}}(10)\) \(g_{\omega^{\omega^{\omega+9}5+\omega^{\omega+8}6}}(10)\)


See also

Numbers By SuperJedi224

Fibonacci Numbers

Pound-Star Notation

Based on the Faxul

Googovipleccix family

Graham Sequence Numbers

-Illion numbers

"-Illion" numbers by SuperJedi224