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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

100,000,000,000,000,000,000,000,000,000,000

## Approximations

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 $$g_{\omega^{\omega3+2}}(10)$$

## Sources

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 Kanrokoti: KumaKuma ψ function
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 · 降下段階配列表記 · 多変数段階配列表記 · 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 · Paduma · 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 · Arai's $$\psi$$ · Sushi Kokuu Hen

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