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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.

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.

## In googology Edit

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 calls this number booiol or 2-noogol.[3]

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

## In science Edit

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

## As a cash denomination Edit

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.

## Example Edit

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 other notationsEdit

Notation Expression
Up-arrow notation $$10 \uparrow 2$$
Hyper-E notation $$E2\#1$$
Chained arrow notation $$10 \rightarrow 2$$
BEAF $$\{10,2\}$$
Fast-growing hierarchy $$f_1(50)$$

## Sources Edit

Numbers named with the fuga- family of prefixes