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The guppy (also called minnowcrumb) is equal to 1020 = E20 = 100,000,000,000,000,000,000.[1] It is equal to 100 quintillion in the short scale and 100 trillion in the long scale. The name was coined by Sbiis Saibian.

Aarex Tiaokhiao calls this number twootol or 20-noogol.[2]

Username5243 calls this number goovol, and it's equal to 10[1]20 in Username5243's Array Notation.[3]

This number is also called Gai (垓 in Chinese , がい in Japanese)[4] in both Japanese counting system and Chinese counting system.

## Examples Edit

• 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, far longer than the age of the universe.
• A guppy square centimeters represents about 2/3 of the cross section of Jupiter.[5]

## As a banknote denomination Edit

Only the Hungarian pengő had banknotes with this number in the denomination; in fact, it was the highest banknote denomination ever issued.

## Approximations in other notations Edit

Notation Lower bound Upper bound
Scientific notation $$1\times10^{20}$$
Arrow notation $$10\uparrow20$$
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}
Bashicu matrix system (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 $$g_{\omega^{\omega2}}(10)$$

## Sources Edit

1. Saibian, Sbiis. Hyper-E Notation. Retrieved 2014-10-22.
2. Part 1 (LAN) - Aarex Googology
3. Part 1 - My Large Numbers
4. 大数の名前
5. Almost Infinite

-minutia group
n-ary numbers with multipliers
Eyelash mite group: eyelash mite-speck · eyelash mite-crumb · eyelash mite-chunk · (binary/ternary/octal)eyelash mite · eyelash mite-bunch · eyelash mite-crowd · eyelash mite-swarm
Dust mite group: dust mite-speck · dust mite-crumb · dust mite-chunk · (binary/ternary/octal)dust mite · dust mite-bunch · dust mite-crowd · dust mite-swarm
Cheese mite group: cheese mite-speck · cheese mite-crumb · cheese mite-chunk · (binary/ternary/octal)cheese mite · cheese mite-bunch · cheese mite-crowd · cheese mite-swarm
Clover mite group: clover mite-speck · clover mite-crumb · clover mite-chunk · (binary/ternary/octal)clover mite · clover mite-bunch · clover mite-crowd · clover mite-swarm
Pipsqueak group: (binary/ternary/octal)pipsqueak
Little squeaker group: (binary/ternary/octal)little squeaker
Small fry group: (binary/ternary/octal)small fry
Guppy group: (binary/ternary/octal)guppyspeck · (binary/ternary/octal)guppycrumb · (binary/ternary/octal)guppychunk · (ternary/quaternary/quinary/duodecimal/hexadecimal/vigesimal/sexagesimal)guppy(bit/byte)
Minnow group: (binary/ternary/octal)minnowspeck · (binary/ternary/octal)minnowcrumb · (binary/ternary/octal)minnowchunk · (ternary)minnow(bit/byte)
Goby group: (binary/ternary/octal)gobyspeck · (binary/ternary/octal)gobycrumb · (binary/ternary/octal)gobychunk · (ternary)goby(bit/byte)