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The eyelash mite is equal to 2E4 using Hyper-E notation.[1] The name was coined by Sbiis Saibian. It is equal to 20,000.

This number is also called clover mite-chunk.

It is the smallest number defined using Saibian's Hyper-E notation with nonnegative integers, and the first number listed on his Hyper-E Numbers page, although it is not his smallest googolism; his smallest is googol-minutia-speck.

In English, it is called twenty thousand.

Currency-related use

Some currencies, such as the Hungarian forint and the Indonesian rupiah, have banknotes with this number in the denomination.

It is also the prize for correctly answering the first six questions in the Indian game show Kaun Banega Crorepati in Indian rupees.

Furthermore, it was also the prize for correctly answering the first two questions in the Japanese game show Quiz \$ Millionaire in Japanese yen.

In politics

In Germany, municipalities with at least 20,000 inhabitants are called Mittelstadt.

It is the bandwidth (in kHz) of the FM broadcast band in the United States and some other countries.

Approximations

Notation Lower bound Upper bound
Scientific notation $$2\times10^4$$
Arrow notation $$3\uparrow9$$ $$12\uparrow4$$
Steinhaus-Moser Notation 5[3] 6[3]
Copy notation 1[5] 2[5]
Taro's multivariable Ackermann function A(3,11) A(3,12)
Pound-Star Notation #*(100)*2
BEAF {3,9} {12,4}
Bashicu matrix system (0)[141] (0)[142]
Hyperfactorial array notation 7! 8!
Fast-growing hierarchy $$f_2(10)$$ $$f_2(11)$$
Hardy hierarchy $$H_{\omega^2}(10)$$ $$H_{\omega^2}(11)$$
Slow-growing hierarchy $$g_{\omega^4\times2}(10)$$

Sources

-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)