Googology Wiki
Googology Wiki
This page is about -yllion's definition. For the alternative definition, see quintillion.

Tryllion is equal to \(10^{32}\) in the myriad system[1][2], or 10 squared 5 times. It is equal to 100 nonillion in the short scale and 100 quintillion in the long scale.

It is also called Gou (溝,沟 in Chinese) or Kou ( こう in Japanese) in Japanese counting system and Chinese counting system.[3]

Full Number



Notation Lower bound Upper bound
Scientific notation \(1\times10^{32}\)
Arrow notation \(10\uparrow32\) or \(10000\uparrow8\)
Steinhaus-Moser Notation 23[3] 24[3]
Copy notation 9[32] 1[33]
Taro's multivariable Ackermann function A(3,103) A(3,104)
Pound-Star Notation #*(7,1,2,3,1)*5 #*(8,3,3,2)*7
BEAF {10,32}
Hyper-E notation E32 or E[10000]8
Bashicu matrix system (0)(0)(0)[10000]
Hyperfactorial array notation 29! 30!
Fast-growing hierarchy \(f_2(99)\) \(f_2(100)\)
Hardy hierarchy \(H_{\omega^2}(99)\) \(H_{\omega^2}(100)\)
Slow-growing hierarchy \(g_{\omega^{\omega3+2}}(10)\)


See also