100

100 (one hundred) (the Roman numeral is C for centum) is the natural number following 99 and preceding 101.

Template:Numbers 100s
Cardinal	100 one hundred
Ordinal	100th one hundredth
Factorization	$2^{2}\cdot 5^{2}$
Divisors	1, 2, 4, 5, 10, 20, 25, 50, 100
Roman numeral	C
Roman numeral (Unicode)	C, c
prefixes	hecto-/hect- (from Greek) centi- (from Latin)
Binary	1100100
Octal	144
Duodecimal	84
Hexadecimal	64
Hebrew	ק (Kuf)

In mathematics

One hundred is the square of 10 (in scientific notation it is written as $10^{2}$ ). The standard SI prefix for a hundred is "hecto-".

One hundred is the basis of percentages (literally "per hundred"), with 100% being a full amount.

It is the sum of the first nine prime numbers, as well as the sum of two prime numbers (47 + 53), and the sum of the cubes of the first four integers (100 = 1³ + 2³ + 3³ + 4³). Also, 2⁶ + 6² = 100, thus 100 is a Leyland number.

One hundred is also an 18-gonal number. It is divisible by the number of primes below it, 25 in this case. But it can not be expressed as the difference between any integer and the total of coprimes below it, making it a noncototient. However, 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.

In science

100 degrees Celsius is the boiling temperature of pure water at sea level

Astronomy

The Messier object M100, a magnitude 10.5 spiral galaxy in the constellation Coma Berenices.

The New General Catalogue object NGC 100, a magnitude 13.3 spiral galaxy in the constellation Pisces.

The Saros number of the solar eclipse series which began on 264 May 13 and ended on 1526 June 10 with a duration of 1262.1 years and 71 solar eclipses. Further, the number of the lunar eclipse series which began on 403 November 15 and ended on 1864 April 22 with a duration of 1460.4 years, and 82 lunar eclipses.

In other fields

One hundred is also:

The number of years in a century
A 100 year old person is known as a centenarian. George Burns. Bob Hope, and United States Senator Strom Thurmond were among those who had lived to 100.
The number of pounds in an American short hundredweight
The United States Senate has 100 Senators
The number of subunits into which many of the world's currencies are divided; for example, one euro is one hundred cents and one Pound Sterling is one hundred pence
The number of tiles in a standard Scrabble set
The denomination of the U.S. hundred-dollar bill with Benjamin Franklin's portrait; the "Benjamin" is the largest U.S. bill in print
The denomination of American savings bonds with Thomas Jefferson's portrait
The denomination of American treasury bonds with Andrew Jackson's portrait
In Greece, India and Israel, 100 is the police telephone number.
In Belgium, 100 is the ambulance and firefighter telephone number.
In United Kingdom, 100 is the operator telephone number
Hundred Days, aka the Waterloo Campaign
"The First Hundred Days" is an arbitrary benchmark of a President of the United States' performance at the beginning of his term
100 is the HTTP status code indicating that the client should continue with its request
STS-100 Space Shuttle Endeavour launched April 19, 2001
The 100-Series Highways are a series of arterial highways in the Canadian province of Nova Scotia
SEPTA Route 100, also known as the Norristown High-Speed Line, is an interurban line system operating between Upper Darby and Norristown, Pennsylvania
NASDAQ-100 is a stock market index of 100 of the largest domestic and international non-financial companies listed on the NASDAQ stock exchange
The American Film Institute series
Radio stations such as Z100 WHTZ New York and Z100 KKRZ, Portland, Oregon
In English slang, adding the number 100 to a particular skill or subject denotes introductory knowledge ("Physics 100", "Soccer 100"), akin to the name of a first year university subject.
Games 100 is an annual listing of the year’s top games
The Time 100 is a list of the 100 most influential people in the world, as assembled by Time. The list has developed into an annual event.
The One Hundred Years War
One Hundred Men and a Girl is a 1937 musical comedy film starring Deanna Durbin
100 Grand Bar (formerly known as $100,000 Bar) is a candy bar produced by Nestlé
Monterrey, Mexico is located at 25 degrees 40' N latitude and 100 degrees 18' W longitude
Pope Valentine succeeded Pope Eugene II to become the 100th Pope in August 827

Vehicles

Audi 100 is a mid-sized automobile produced by Audi from 1968-97.
Rover P4 100 produced by The Rover Co. Ltd. from 1960-62.
Rover 100 a supermini car that was produced by the Rover Group from 1990-98.

Books

"Hundred Dollar Holiday: The Case For A More Joyful Christmas" by Bill McKibben
"One Hundred Days: Memoirs of the Falklands Battle Group Commander" by Admiral Sandy Woodward
"The Hundred Days" by Patrick O'Brian
"100: A Ranking of the Most Influential Persons in History" by Michael H. Hart
100 Books by August Derleth is a bibliography of books by American author August Derleth
"One Hundred Years of Solitude" by Gabriel Garcia Marquez

In music

Pop 100 is a chart created in 2005 and released weekly by Billboard in the United States. It measures mainstream radio airplay, and is one of the three component charts, along with the Hot 100 Singles Sales and Hot Digital Songs charts, that determine the chart positions of singles on the Pop 100 chart.
Triple J Hottest 100 is an annual music poll, based on the votes of Australian youth radio station Triple J listeners
The song "100 Days 100 Nights" by Sharon Jones
The song "100 Years Ago" by the Rolling Stones
The song "100 Years" by Five for Fighting
The song "A Hundred Men" by Glenn Yarbrough
The song "A Hundred Pounds of Clay" by Gene McDaniels
The song "Nothing Like a Hundred Miles" by James Taylor
The song "One Hundred Years From Now" by the Byrds
The song “One Hundred Ways” by Quincy Jones
The song "100 Miles and Runnin'" by N.W.A
100, Dear Jane's debut album, released on August 27, 2006, came with a DVD with some of the band's MVs and a documentary.
Haircut 100 was a pop rock-influenced band, formed in 1980 by Nick Heyward, whose most successful single was "Love Plus One"
The 100 Club is a music venue at 100 Oxford Street in London
100 Proof (Aged in Soul) was a funk/soul group formed in Detroit, Michigan in 1969

In television

100 episodes, generally the point at which a TV series becomes viable for syndication (often reached during a prime time series' 5th season)
"I Married Joan," starring Joan Davis and Jim Backus, aired on NBC for 100 episodes from 1952 to 1955
Unhappily Ever After aired on the The WB Network for 100 episodes from 1995 to 1999
100 Biggest Weather Moments, hosted by Harry Connick, Jr. on The Weather Channel in 2007
On Star Trek: Deep Space Nine, "The Hundred" refers to a group of 100 young changelings sent out to explore the galaxy
100 Greatest British Television Programmes
100 Greatest Britons, a BBC poll
SABC3's Great South Africans was a South African television series that aired on SABC3 and hosted by Noeleen Maholwana Sangqu and Denis Beckett
100 Deeds for Eddie McDowd is a television program that ran on Nickelodeon from 1999 to 2002
100 Grand was a short-lived American game show hosted by Jack Clark

In sports

The number of yards in an American football field (not including the end zones).
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, set by Wilt Chamberlain of the Philadelphia Warriers on March 2, 1962
The Freedom 100 is an Indy Pro Series auto race held the Friday before the Indianapolis 500 at the Indianapolis Motor Speedway
The 2004 World Series between the Boston Red Sox and the St. Louis Cardinals was the 100th Fall Classic
San Diego Chargers running back LaDainian Tomlinson became the fastest player in NFL history to reach 100 touchdowns on November 19, 2006
Ryan Howard of the Philadelphia Phillies became the fastest MLB player to reach 100 home runs on June 27, 2007
The minimum distance in yards for a Par 3 on a golf course

External links

On the Number 100

References

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