97 (ninety-seven) is the

natural number In mathematics, the natural numbers are those numbers used for counting (as in "there are ''six'' coins on the table") and ordering (as in "this is the ''third'' largest city in the country"). Numbers used for counting are called '' cardinal ...

following 96 and preceding 98. It is a

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 ...

and the only prime in the nineties.

In mathematics

97 is: * the 25th

(the largest two-digit prime number in base 10), following 89 and preceding 101. * a Proth prime and a

Pierpont prime In number theory, a Pierpont prime is a prime number of the form 2^u\cdot 3^v + 1\, for some nonnegative integers and . That is, they are the prime numbers for which is 3-smooth. They are named after the mathematician James Pierpont, who us ...

as it is 3 × 2⁵ + 1. * the eleventh member of the Mian–Chowla sequence. * a self number in base 10, since there is no

integer An integer is the number zero (), a positive natural number (, , , etc.) or a negative integer with a minus sign ( −1, −2, −3, etc.). The negative numbers are the additive inverses of the corresponding positive numbers. In the languag ...

that added to its own digits, adds up to 97. * the smallest odd prime that is not a

cluster prime In number theory, a cluster prime is a prime number such that every even positive integer ''k'' ≤ p − 3 can be written as the difference between two prime numbers not exceeding . For example, the number 23 is a cluster prime because ...

. * the highest two-digit number where the sum of its digits is a square. * the number of primes <= 2⁹. * The numbers 97, 907, 9007, 90007 and 900007 are all primes, and they are all happy primes. However, 9000007 (read as ''nine million seven'') is

composite Composite or compositing may refer to: Materials * Composite material, a material that is made from several different substances ** Metal matrix composite, composed of metal and other parts ** Cermet, a composite of ceramic and metallic materials ...

and has the factorisation

277 __NOTOC__ Year 277 ( CCLXXVII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Probus and Paulinus (or, less frequently, year 1030 ''A ...

× 32491. * an emirp * an isolated prime, since 95 and 99 aren't prime.

In science

Ninety-seven is: * The

atomic number The atomic number or nuclear charge number (symbol ''Z'') of a chemical element is the charge number of an atomic nucleus. For ordinary nuclei, this is equal to the proton number (''n''p) or the number of protons found in the nucleus of ever ...

berkelium Berkelium is a transuranic radioactive chemical element with the symbol Bk and atomic number 97. It is a member of the actinide and transuranium element series. It is named after the city of Berkeley, California, the location of the Lawrence B ...

, an

actinide The actinide () or actinoid () series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium. The actinide series derives its name from the first element in the series, actinium. The info ...

In astronomy

* Messier object M97, a magnitude 12.0 planetary nebula in the

constellation A constellation is an area on the celestial sphere in which a group of visible stars forms a perceived pattern or outline, typically representing an animal, mythological subject, or inanimate object. The origins of the earliest constellation ...

Ursa Major Ursa Major (; also known as the Great Bear) is a constellation in the northern sky, whose associated mythology likely dates back into prehistory. Its Latin name means "greater (or larger) bear," referring to and contrasting it with nearby Ursa ...

, also known as the

Owl Nebula The Owl Nebula (also known as Messier 97, M97 or NGC 3587) is a starburst ("planetary") nebula approximately 2,030 light years away in the northern constellation Ursa Major. The estimated age of the Owl Nebula is about 8,000 years. It is approx ...

* The

New General Catalogue The ''New General Catalogue of Nebulae and Clusters of Stars'' (abbreviated NGC) is an astronomical catalogue of deep-sky objects compiled by John Louis Emil Dreyer in 1888. The NGC contains 7,840 objects, including galaxies, star clusters and ...

object NGC 97, an elliptical galaxy in the constellation Andromeda

In other fields

Ninety-seven is: * The

97th United States Congress The 97th United States Congress was a meeting of the legislative branch of the United States federal government, composed of the United States Senate and the United States House of Representatives. It met in Washington, D.C. from January 3, 1 ...

met during the

Ronald Reagan Ronald Wilson Reagan ( ; February 6, 1911June 5, 2004) was an American politician, actor, and union leader who served as the 40th president of the United States from 1981 to 1989. He also served as the 33rd governor of California from 1967 ...

administration, from January 1981 to January 1983 * The 10-97

police code A police code is a brevity code, usually numerical or alphanumerical, used to transmit information between law enforcement over police radio systems. Examples of police codes include "10 codes" (such as 10-4 for "okay" or "acknowledged"—somet ...

means "arrived on the scene" *

STS-97 STS-97 was a Space Shuttle mission to the International Space Station (ISS) flown by Space Shuttle '' Endeavour''. The crew installed the first set of solar arrays to the ISS, prepared a docking port for arrival of the Destiny Laboratory Modul ...

Space Shuttle ''Endeavour'' mission launched November 30, 2000 * The 97th Infantry Division was a unit of the

United States Army The United States Army (USA) is the land service branch of the United States Armed Forces. It is one of the eight U.S. uniformed services, and is designated as the Army of the United States in the U.S. Constitution.Article II, section 2, ...

World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was List of wars and anthropogenic disasters by death toll, one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, ...

and

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...

* ''

Madden NFL 97 ''Madden NFL 97'' is a football video game released in 1996. It was the first multiplatform ''Madden'' game released for the 32-bit consoles (following a 3DO-exclusive version simply titled ''John Madden Football'' in 1994), being released on b ...

'' was the first

John Madden John Earl Madden (April 10, 1936 – December 28, 2021) was an American football coach and sports commentator in the National Football League (NFL). He served as the head coach of the Oakland Raiders from 1969 to 1978, who he led to eight pl ...

NFL

American football American football (referred to simply as football in the United States and Canada), also known as gridiron, is a team sport played by two teams of eleven players on a rectangular field with goalposts at each end. The offense, the team wi ...

game to be created in the 32-bit gaming era * Radio stations broadcasting on frequencies near 97, such as Hot 97,

New York City New York, often called New York City or NYC, is the List of United States cities by population, most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the L ...

and 97X,

Tampa Tampa () is a city on the Gulf Coast of the U.S. state of Florida. The city's borders include the north shore of Tampa Bay and the east shore of Old Tampa Bay. Tampa is the largest city in the Tampa Bay area and the seat of Hillsborough C ...

, Florida * The decimal

unicode Unicode, formally The Unicode Standard,The formal version reference is is an information technology standard for the consistent encoding, representation, and handling of text expressed in most of the world's writing systems. The standard, ...

number representing the

Latin Latin (, or , ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through ...

lowercase "a"

In music

* A song " Baby Boy / Saturday Night '97" by Whigfield * The number of the Southern Railway train in the

Wreck of the Old 97 Wreck or The Wreck may refer to: Common uses * Wreck, a collision of an automobile, aircraft or other vehicle * Shipwreck, the remains of a ship after a crisis at sea Places * The Wreck (surf spot), a surf spot at Byron Bay, New South Wales, Aus ...

, a ballad recorded by numerous artists, including Flatt and Scruggs,

Woody Guthrie Woodrow Wilson Guthrie (; July 14, 1912 – October 3, 1967) was an American singer-songwriter, one of the most significant figures in American folk music. His work focused on themes of American socialism and anti-fascism. He has inspire ...

Johnny Cash John R. Cash (born J. R. Cash; February 26, 1932 – September 12, 2003) was an American country singer-songwriter. Much of Cash's music contained themes of sorrow, moral tribulation, and redemption, especially in the later stages of his c ...

Nine Pound Hammer Nine Pound Hammer is an American cowpunk band formed in 1985 by vocalist Scott Luallen and guitarist Blaine Cartwright in their hometown of Owensboro, Kentucky. Nine Pound hammer was one of the first rural hardcore punk bands to substantially i ...

, and Hank Snow. * The Old 97's are an alt-country band, which took their name from the song "The Wreck of the Old ‘97". * A song by Alkaline Trio off their self-titled album * The Marching 97,

marching band A marching band is a group of instrumental musicians who perform while marching, often for entertainment or competition. Instrumentation typically includes brass, woodwind, and percussion instruments. Most marching bands wear a uniform, o ...

of Lehigh University. * District 97, a

progressive rock Progressive rock (shortened as prog rock or simply prog; sometimes conflated with art rock) is a broad genre of rock music that developed in the United Kingdom and United States through the mid- to late 1960s, peaking in the early 1970s. I ...

band from the

Chicago area The Chicago metropolitan area, also colloquially referred to as Chicagoland, is a metropolitan area in the Midwestern United States. Encompassing 10,286 sq mi (28,120 km2), the metropolitan area includes the city of Chicago, its suburbs and hin ...

(named after the elementary school District 97 in

Oak Park, Illinois Oak Park is a village in Cook County, Illinois, adjacent to Chicago. It is the 29th-most populous municipality in Illinois with a population of 54,583 as of the 2020 U.S. Census estimate. Oak Park was first settled in 1835 and later incorporated ...

In sports

* The car number of

Kurt Busch Kurt Thomas Busch (born August 4, 1978) is an American professional auto racing driver. He last competed full-time in the NASCAR Cup Series, driving the No. 45 Toyota Camry TRD for 23XI Racing. He is the 2004 NASCAR Cup Series champion and th ...

's Ford when he won the 2004 NASCAR Nextel Cup Series championship.

References

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