Nonaginticentillion is equal to \(10^{573}\). It is defined using generalizations of Jonathan Bowers' -illion system. [1][2] It is 574 digits long.


Notation Lower bound Upper bound
Scientific notation \(1\times10^{573}\)
Arrow notation \(10\uparrow573\)
Steinhaus-Moser Notation 240[3] 241[3]
Copy notation 9[573] 1[574]
Chained arrow notation \(10\rightarrow573\)
H* function H(190)
Taro's multivariable Ackermann function A(3,1900) A(3,1901)
Pound-Star Notation #*((14))*15 #*((15))*15
BEAF & Bird's array notation {10,573}
Hyper-E notation E573
Hyperfactorial array notation 283! 284!
Fast-growing hierarchy \(f_2(1\,892)\) \(f_2(1\,893)\)
Hardy hierarchy \(H_{\omega^2}(1\,892)\) \(H_{\omega^2}(1\,893)\)
Slow-growing hierarchy \(g_{\omega^{\omega^25+\omega7+3}}(10)\)


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