Guppy

Guppy (also called minnowcrumb) is equal to 1020 = E20 = 100,000,000,000,000,000,000. It is equal to 100 quintillion in the short scale and 100 trillion in the long scale. The name was coined by Sbiis Saibian. It is 21 digits long.
Aarex Tiaokhiao calls this number twootol or 20-noogol.Part 1 (LAN) - Aarex Googology
Username5243 calls this number goovol, and it's equal to 10[1]20 in Username5243's Array Notation.Part 1 - My Large Numbers
This number is also called Gai (垓 in Chinese , がい in Japanese)大数の名前 in both Japanese counting system and Chinese counting system.
CompactStar gave the name pentyriad for this number as part of the -yriad system, referring to it being myriad5.-yriad numbers. Retrieved Apr 21, 2023 
== Examples ==
* A guppy gallons of water in a sphere would be 897 kilometers wide, 1/14 of the diameter of Earth.
* A guppy gallons represents approximately 30% of all the water on the Earth.
* A guppy seconds is 3.16 trillion years, about 229 times longer than the age of the universe.
* A guppy square centimeters represents about 2/3 of the cross section of Jupiter.Almost Infinite
== As a banknote denomination ==
Only the had banknotes with this number in the denomination; in fact, it was the highest banknote denomination ever issued.
== Video: A guppy years from now ==
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== Approximations in other notations ==
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{20}\) 	\(1\times10^{20}\)
Arrow notation 	\(10\uparrow20\) 	\(10\uparrow20\)
Steinhaus-Moser Notation 	16[3] 	17[3]
Copy notation 	9[20] 	1[21]
Taro's multivariable Ackermann function	A(3,63) 	A(3,64)
Pound-Star Notation 	#*(5,0,2,4)*4 	#*(11)*18
BEAF 	{10,20} 	{10,20}
Bashicu matrix system 	(0)(0)[100000] 	(0)(0)[100000]
Hyperfactorial array notation 	21! 	22!
Fast-growing hierarchy 	\(f_2(60)\) 	\(f_2(61)\)
Hardy hierarchy 	\(H_{\omega^2}(60)\) 	\(H_{\omega^2}(61)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega2}}(10)\)	\(g_{\omega^{\omega2}}(10)\)
== Sources ==
== See also ==
ja:垓
zh:垓
Category:Numbers
Category:Animal-based name
Category:Banknote denominations
Category:Class 2
Category:Numbers by Sbiis Saibian
Category:Numbers with 7 to 29 digits
Category:Googol Regiment
Category:Guppy regiment