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100 (hundred or one hundred) is a positive integer following 99 and preceding 101.[1] It is significant as the smallest three-digit number in base 10, since it is 102. It is an even composite number. It is equal to the square root of 10,000.

The term came from Old English hundred,[2] from Proto-Germanic hunda- (meaning "one hundred") and rath (meaning "number"). Before the 18th century, the word "hundred" had varied meanings, one of which was 120.

It is one of few non-single-digit numbers that has its own emoji: 💯

## Example

Below are 100 copies of the letter A.

A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A

## In googology

In Greek-based number-naming systems, 100 is associated with prefix hecto-, and with prefix centi- in Latin systems. It is found in many googologisms also based on 10, such as googol.

100 can be named "garten" with the gar- prefix.

Aarex Tiaokhiao coined the names booiol and 2-noogol for this number.[3]

Username5243 coined the name goodol for this number, and it's equal to 10[1]2 in Username5243's Array Notation.[4]

## In science

It is also the atomic number of fermium, the heaviest element that can be formed by neutron capture from naturally occuring elements.

## Currency-related use

Some currencies, such as the euro and the United States dollar, have banknotes with this number in the denomination.

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

It is also the prize for correctly answering the first question in some national editions of the game show Who Wants to Be a Millionaire? in the respective local currency, and the prize for correctly answering the first two questions in the German game show Wer wird Millionär? in euros.

## In other notations

All of these expression in other notations are exact.

Notation Expression
Up-arrow notation $$10 \uparrow 2$$
Hyper-E notation $$E2\#1, E2$$
Chained arrow notation $$10 \rightarrow 2$$
BEAF $$\{10,2\}$$
Fast-growing hierarchy $$f_1^2(25)$$, $$f_1(50)$$, $$f_0(99)$$
Slow-growing hierarchy $$g_\omega(100)$$; $$g_{100}(n)$$; $$g_{\omega^2}(10)$$
Hardy hierarchy $$H_{\omega2}(25), H_{\omega}(50)$$

## In other languages

Language(s) Name
Afrikaans, Dutch honderd
Albanian qind
Aragonese cent, cient, ciento
Aromanian sutã
Asturian cien, cientu
Azeri, Crimean Tatar, Turkish yüz
Basque ehun
Breton kant
Catalan, Esperanto, French, Friulian, Ido, Interlingue, Occitan cent
Cebuano gatos
Corsican, Sicilian centu
Danish hundred, hundrede
Faroese, Icelandic hundrað
Fijian drau
Finnish sata
Galician cen, cento
German hundert
Greenlandic untriti
Guaraní sa
Hawaiian haneli
Hungarian száz
Indonesian, Malay ratus
Interlingua, Italian cento
Latin centum
Latvian simts
Lithuanian šimtas
Lojban xecto, panono
Luxembourgish honnert
Maltese mija
Maore Comorian, Swahili mia
Maori hokorima, rau
Mirandese, Spanish cien, ciento
Northern Sami čuođi
Norwegian hundre
Novial sent
Portuguese cem, cento
Quechua pachak
Romanian sută
Romansch tschient
Sardinian centu, chentu
Scottish Gaelic ceud
Slavonic sto
Swedish hundra
Tagalog daan
Turkmen ýüz
Uzbek yuz
Vietnamese trăm
Volapük tum
Welsh cant

In all of Slavic languages, 100 is called "sto" or "сто" in Cyrillic (pronounciation is the same), except Bosnian and Croatian languages.

Language Name
Bosnian stotinu
Croatian jedna stotina

### Cyrillic alphabets

Language(s) Name
Bashkir йөҙ
Chuvash ҫӗр
Kazakh, Kyrgyz жүз
Khakas, Shor чӱс
Komi-Permyak сё
Modern Slavonic сто
Mongolian зуу
Old Church Slavonic съто
Tajik, Yagnobi сад
Tatar йөз
Tuvan чүс
Udmurt сю

### Other alphabets

Language(s) Name
Ancient Greek ἑκατόν
Armenian հարյուր
Georgian ასი
Modern Greek εκατό, εκατόν

Language(s) Name
Bengali শত, একশ
Hindi सौ, सैकड़ा
Tamil நூறு
Thai ร้อย

### In CJK languages

Language(s) Name
Hanzi, Kanji, Hanja 百, 佰
Cantonese baak3
Japanese ひゃく (hyaku)
Korean 백 (baek, paek)
Mandarin bǎi

### In RTL languages

Language(s) Name
Arabic مِئَة, مِائَة
Dhivehi ސަތޭކަ
Hebrew מֵאָה
Kurdish سه‌د
Ottoman Turkish يوز
Pashto سل
Persian صَد
Urdu سو
Uyghur يۈز
Yiddish הונדערט

## Sources

Numbers named with the fuga- family of prefixes