# Hundred

Hundred
100
presentation
Roman C.
dual 110 0100
Octal 144
Duodecimal 84
Morse code - - - - - - - - - - - - - -
Mathematical properties
sign positive
parity straight
Factorization ${\ displaystyle 2 ^ {2} \ cdot 5 ^ {2}}$
Divider 1, 2, 4, 5, 10, 20, 25, 50, 100

The hundred (100), also called one hundred , is the natural number between 99 and 101. It is an even and a square number .

## Linguistic

The German numeral Hundert or Hundred is, like all numerals, written in upper or lower case, depending on the context. It was formed from the Indo-European root * -k'm.tom , which was probably originally a formation from * dek'm. [T] (ten) and meant "ten tens". The ending comes from a Germanic basic word raþa , which means "number" (cf. English hundred ). There is still the plural hundreds of the numerical word hundred , but the number is declinable in combinations ( one hundred , two hundred , etc.).

The Indo-European original word is also found in Greek ἑκατόν (hekaton) and Latin centum (including the Roman numeral C), which found their way into the German language as prefixes hecto- (hundredfold) and zenti- (hundredth part). The currency denomination cent comes from the Latin centum , which not only denotes the hundredth part of the basic currency in German (see also Centesimo ).

The hundredweight , which consists of 100 pounds, is also derived from the Latin root.

## mathematics

The one hundred is particularly important in the decimal system , as it is a "round" number as the second power of 10 (10²). The in elementary school usually auswendigzulernende "small multiplication table " includes multiplications to 10 x 10 = 100th

100 is also the sum of the first 9 prime numbers , the first four cube numbers (1³ + 2³ + 3³ + 4³ = 100) and a Harshad number .

In practice, it is primarily relevant to express size relationships; the reference to a size is usually expressed in hundredths of a percent .

## History and society

The hundreds as the one hand, "round", on the other hand the life of a human-border number in a social context often synonymous with a particularly long time or a large amount, hectograph ( "One hundred (times) scription") z. B. was called the usual duplication process before the invention of xerocopy .

## Mythology and religion

• In Greek mythology there are three legendary beings with a hundred arms each, the Hekatoncheiren and the giant Argos , who was supposed to guard Io with his hundred eyes , from which the expression Argus eyes is derived.
• Hecatomb was called a sacrifice of 100 cattle by the ancient Greeks, later the term was generally used for larger animal sacrifices, in ancient Rome even a month ( Hecatombaon ) was named after such animal sacrifices.

## astronomy

The asteroid (513) Centesima was named after the number one hundred .