ⓘ 100


ⓘ 100

100 or one hundred is the natural number following 99 and preceding 101.

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.


1. In mathematics

100 is the square of 10 in scientific notation it is written as 10 2. The standard SI prefix for a hundred is "hecto-".

100 is the basis of percentages per cent meaning "per hundred" in Latin, with 100% being a full amount.

100 is the sum of the first nine prime numbers, as well as the sum of some pairs of prime numbers e.g., 3 + 97, 11 + 89, 17 + 83, 29 + 71, 41 + 59, and 47 + 53.

100 is the sum of the cubes of the first four integers 100 = 1 3 + 2 3 + 3 + 4 3. This is related by Nicomachuss theorem to the fact that 100 also equals the square of the sum of the first four integers: 100 = 10 2 = 1 + 2 + 3 + 4 2.

2 6 + 6 2 = 100, thus 100 is a Leyland number.

100 is an 18-gonal number. It is divisible by 25, the number of primes below it. It can not be expressed as the difference between any integer and the total of coprimes below it, making it a noncototient. It can be expressed as a sum of some of its divisors, making it a semiperfect number.

100 is a Harshad number in base 10, and also in base 4, and in that base it is a self-descriptive number.

There are exactly 100 prime numbers whose digits are in strictly ascending order e.g. 239, 2357 etc.

100 is the smallest number whose common logarithm is a prime number i.e. 10 n for which n is prime.


2. In science

One hundred is the atomic number of fermium, an actinide and the first of the heavy metals that cannot be created through neutron bombardment.

On the Celsius scale, 100 degrees is the boiling temperature of pure water at sea level.

The Karman line lies at an altitude of 100 kilometres above the Earths sea level and is commonly used to define the boundary between Earths atmosphere and outer space.


3. In religion

  • There are 100 blasts of the Shofar heard in the service of Rosh Hashana, the Jewish New Year.
  • A religious Jew is expected to utter at least 100 blessings daily.
  • In the Hindu book of the Mahabharata, the king Dhritarashtra had 100 sons known as the Kauravas.

4. In money

Most of the worlds 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 U.S. hundred-dollar bill has Benjamin Franklins portrait; the "Benjamin" is the largest U.S. bill in print. American savings bonds of $100 have Thomas Jeffersons portrait, while American $100 treasury bonds have Andrew Jacksons portrait.


5. In other fields

One hundred is also:

  • In Greece, India, Israel and Nepal, 100 is the police telephone number.
  • The HTTP status code indicating that the client should continue with its request.
  • In United Kingdom, 100 is the operator telephone number.
  • The 100 TV series.
  • The number of pounds in an American short hundredweight.
  • The age at which a person becomes a centenarian.
  • The number of years in a century.
  • In Belgium, 100 is the ambulance and firefighter telephone number.

6. In sports

  • The number of yards in an American football field not including the end zones.
  • The number of points required for a snooker player to score a century break, a significant milestone.
  • The number of runs required for a cricket batsman to score a century, a significant milestone.
  • The record number of points scored in one NBA game by a single player, set by Wilt Chamberlain of the Philadelphia Warriors on March 2, 1962.
  • The 4  100 metres relay or sprint relay is an athletics track event run in lanes over one lap of the track with four runners completing 100 metres each
  • Bubbling Under Hot 100 Singles also known as Bubbling Under the Hot 100 is a chart published weekly by Billboard magazine in the United States. The
  • The Dutch Album Top 100 is a weekly hit list of music albums, compiled by Dutch Charts. List shows the 100 best - selling music albums of the moment in the
  • Highway 100 AR 100 Ark. 100 and Hwy. 100 is a designation for two state highways in Central Arkansas. One route of 8.72 miles 14.03 km begins at
  • The NASDAQ - 100 NDX is a stock market index made up of 103 equity securities issued by 100 of the largest non - financial companies listed on the Nasdaq
  • The FIFA 100 is a list of the world - renowned Brazilian striker Pele s choice of the greatest living footballers Unveiled on 4 March 2004 at a gala
  • AD 100 C was a leap year starting on Wednesday link will display the full calendar of the Julian calendar. In the Roman Empire, it was sometimes referred
  • The Dutch Single Top 100 is a Dutch chart, based on official physical single sales, legal downloads and since July 2013 streaming and composed by Dutch
  • The 100 series 100 系, Hyaku - kei was a Japanese Shinkansen high - speed train type which operated between 1985 and 2012 on the Tokaido Shinkansen and Sanyo

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