The 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 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

myllion byllion tryllion quadryllion quintyllion
sextyllion septyllion octyllion nonyllion decyllion
undecyllion duodecyllion tredecyllion quattuordecyllion quindecyllion
sexdecyllion septdecyllion octodecyllion novemdecyllion vigintyllion
unvigintyllion duovigintyllion trevigintyllion quattuorvigintyllion quinvigintyllion
sexvigintyllion septemvigintyllion octovigintyllion novemvigintyllion trigintyllion
untrigintyllion duotrigintyllion tretrigintyllion quattuortrigintyllion quintrigintyllion
sextrigintyllion septtrigintyllion octotrigintyllion novemtrigintyllion quadragintyllion
quinquagintyllion sexagintyllion septuagintyllion octogintyllion nonagintyllion
centyllion ducentyllion trecentyllion quadringentyllion quingentyllion
sescentyllion septingentyllion octingentyllion nongentyllion millyllion
myryllion micryllion nanyllion picyllion femtyllion
attyllion zeptyllion yoctyllion googolyllion latinlatinlatinbyllionyllionyllionyllion
Googology in Asia

Fish numbers: Fish number 1 · Fish number 2 · Fish number 3 · Fish number 4 · Fish number 5 · Fish number 6 · Fish number 7
Mapping functions: S map · SS map · S(n) map · M(n) map · M(m,n) map
By Aeton: Okojo numbers · N-growing hierarchy
By BashicuHyudora: Primitive sequence number · Pair sequence number · Bashicu matrix system
By 巨大数大好きbot: Flan numbers
By Jason: Irrational arrow notation · δOCF · δφ · ε function
By mrna: 段階配列表記 · SSAN · S-σ
By Nayuta Ito: N primitive
By p進大好きbot: Large Number Garden Number
By Yukito: Hyper primitive sequence system · Y sequence · YY sequence · Y function
Indian counting system: Lakh · Crore · Tallakshana · Uppala · Dvajagravati · Mahakathana · Asankhyeya · Dvajagranisamani · Vahanaprajnapti · Inga · Kuruta · Sarvanikshepa · Agrasara · Uttaraparamanurajahpravesa · Avatamsaka Sutra · Nirabhilapya nirabhilapya parivarta
Chinese, Japanese and Korean counting system: Wan · Yi · Zhao · Jing · Gai · Zi · Rang · Gou · Jian · Zheng · Zai · Ji · Gougasha · Asougi · Nayuta · Fukashigi · Muryoutaisuu
Other: Taro's multivariable Ackermann function · TR function · Sushi Kokuu Hen

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