100 or one hundred (

Roman numeral Roman numerals are a numeral system that originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages. Numbers are written with combinations of letters from the Latin alphabet, ea ...

: C) is the

natural number In mathematics, the natural numbers are the numbers 0, 1, 2, 3, and so on, possibly excluding 0. Some start counting with 0, defining the natural numbers as the non-negative integers , while others start with 1, defining them as the positive in ...

following 99 and preceding 101.

In mathematics

100 is the square of 10 (in scientific notation it is written as 10²). The standard SI prefix for a hundred is " hecto-". 100 is the basis of percentages ( meaning "by the hundred" in Latin), with 100% being a full amount. 100 is a Harshad number in decimal, and also in base-four, a base in-which it is also a self-descriptive number. 100 is the sum of the first nine

prime number A prime number (or a prime) is a natural number greater than 1 that is not a Product (mathematics), product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number. For example, 5 is prime ...

s, from 2 through 23. It is also divisible by the number of primes below it, 25. 100 cannot be expressed as the difference between any integer and the total of coprimes below it, making it a noncototient. 100 has a reduced totient of 20, and an Euler totient of 40. A totient value of 100 is obtained from four numbers: 101, 125, 202, and 250. 100 can be expressed as a sum of some of its divisors, making it a semiperfect number. The

geometric mean In mathematics, the geometric mean is a mean or average which indicates a central tendency of a finite collection of positive real numbers by using the product of their values (as opposed to the arithmetic mean which uses their sum). The geometri ...

of its nine divisors is 10. 100 is the sum of the cubes of the first four positive

integers An integer is the number zero (0), a positive natural number (1, 2, 3, ...), or the negation of a positive natural number (−1, −2, −3, ...). The negations or additive inverses of the positive natural numbers are referred to as negative in ...

(100 = 1³ + 2³ + 3³ + 4³). This is related by Nicomachus's theorem to the fact that 100 also equals the square of the sum of the first four positive integers: . 100 = 2⁶ + 6², thus 100 is the seventh Leyland number. 100 is also the seventeenth Erdős–Woods number, and the fourth 18- gonal number. It is the 10th star number (whose

digit sum In mathematics, the digit sum of a natural number in a given radix, number base is the sum of all its numerical digit, digits. For example, the digit sum of the decimal number 9045 would be 9 + 0 + 4 + 5 = 18. Definition Let n be a natural number. ...

also adds to 10 in decimal).

In history

*In medieval contexts, it may be described as the short hundred or five score in order to differentiate the English and Germanic use of "hundred" to describe the long hundred of six score or 120.

In money

Most of the world's currencies are divided into 100 subunits. For example, one euro is one hundred cents and one pound sterling is one hundred pence. By specification, 100 euro notes feature a picture of a Rococo gateway on the obverse and a Baroque bridge on the reverse. The United States one-hundred-dollar bill has

Benjamin Franklin Benjamin Franklin (April 17, 1790) was an American polymath: a writer, scientist, inventor, statesman, diplomat, printer, publisher and Political philosophy, political philosopher.#britannica, Encyclopædia Britannica, Wood, 2021 Among the m ...

's portrait; this "Benjamin" is the largest American

banknote A banknote or bank notealso called a bill (North American English) or simply a noteis a type of paper money that is made and distributed ("issued") by a bank of issue, payable to the bearer on demand. Banknotes were originally issued by commerc ...

in circulation.

In other fields

Computers & Software

* The HTTP status code indicating that the client should continue with its request. * 100 Mbps Ethernet: Fast Ethernet standard.

Science & Measurement

* 100°C: The boiling point of water under standard atmospheric pressure. * 100 centimetres = 1 meter: Used in metric measurements. * 100 is the atomic number of Fermium (Fm): A synthetic chemical element in the periodic table.

Sports

* 100-meter sprint: One of the most prestigious Olympic events.

Culture

* 100 emoji 💯: Is commonly used to represent something excellent or perfect.

References

* Wells, D. '' The Penguin Dictionary of Curious and Interesting Numbers'' London: Penguin Group. (1987): 133

External links

* * {{DEFAULTSORT:100 (Number) Integers