97 (number)
Encyclopedia
97 is the natural number
following 96
and preceding 98
.
(the largest two-digit prime number in base 10), following 89 and preceding 101
. 97 is a Proth prime as it is 3 × 25 + 1.
The numbers 97, 907, 9007, 90007 and 900007 are happy primes. However, 9000007 (read as nine million seven) is composite
and has the factorisation 277
× 32491.
97 is the tenth member of the Mian–Chowla sequence.
97 is the smallest factor of one more than the product of the first twenty-five terms of the Euclid–Mullin sequence, making it the twenty-sixth term.
Since there is no integer that added to its own digits adds up to 97, 97 is a self number
in base 10.
Natural number
In mathematics, the natural numbers are the ordinary whole numbers used for counting and ordering . These purposes are related to the linguistic notions of cardinal and ordinal numbers, respectively...
following 96
96 (number)
96 is the natural number following 95 and preceding 97.-In mathematics:Ninety-six is an octagonal number, a refactorable number and an untouchable number. Since it is a multiple of 6, it is a semiperfect number...
and preceding 98
98 (number)
98 is the natural number following 97 and preceding 99.-In astronomy:* Messier 98, a magnitude 11.0 spiral galaxy in the constellation Coma Berenices....
.
In mathematics
97 is the 25th prime numberPrime number
A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself. A natural number greater than 1 that is not a prime number is called a composite number. For example 5 is prime, as only 1 and 5 divide it, whereas 6 is composite, since it has the divisors 2...
(the largest two-digit prime number in base 10), following 89 and preceding 101
101 (number)
101 is the natural number following 100 and preceding 102.It is variously pronounced "one hundred and one" / "a hundred and one", "one hundred one" / "a hundred one", and "one oh one"...
. 97 is a Proth prime as it is 3 × 25 + 1.
The numbers 97, 907, 9007, 90007 and 900007 are happy primes. However, 9000007 (read as nine million seven) is composite
Composite number
A composite number is a positive integer which has a positive divisor other than one or itself. In other words a composite number is any positive integer greater than one that is not a prime number....
and has the factorisation 277
277 (number)
277 is the natural number following 276 and preceding 278.-In mathematics:277 is the fifty-ninth prime number, following 271 and preceding 281...
× 32491.
97 is the tenth member of the Mian–Chowla sequence.
97 is the smallest factor of one more than the product of the first twenty-five terms of the Euclid–Mullin sequence, making it the twenty-sixth term.
Since there is no integer that added to its own digits adds up to 97, 97 is a self number
Self number
A self number, Colombian number or Devlali number is an integer which, in a given base, cannot be generated by any other integer added to the sum of that other integer's digits. For example, 21 is not a self number, since it can be generated by the sum of 15 and the digits comprising 15, that is,...
in base 10.
In astronomy
- Messier objectMessier objectThe Messier objects are a set of astronomical objects first listed by French astronomer Charles Messier in 1771. The original motivation of the catalogue was that Messier was a comet hunter, and was frustrated by objects which resembled but were not comets...
M97, a magnitude 12.0 planetary nebulaPlanetary nebulaA planetary nebula is an emission nebula consisting of an expanding glowing shell of ionized gas ejected during the asymptotic giant branch phase of certain types of stars late in their life...
in the constellationConstellationIn modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....
Ursa MajorUrsa MajorUrsa Major , also known as the Great Bear, is a constellation visible throughout the year in most of the northern hemisphere. It can best be seen in April...
, also known as the Owl NebulaOwl NebulaThe Owl Nebula is a planetary nebula in the constellation Ursa Major. It was discovered by Pierre Méchain in 1781.... - The New General CatalogueNew General CatalogueThe New General Catalogue of Nebulae and Clusters of Stars is a well-known catalogue of deep sky objects in astronomy. It contains 7,840 objects, known as the NGC objects...
object NGC 97, an elliptical galaxyElliptical galaxyAn elliptical galaxy is a galaxy having an approximately ellipsoidal shape and a smooth, nearly featureless brightness profile. They range in shape from nearly spherical to highly flat and in size from hundreds of millions to over one trillion stars...
in the constellation AndromedaAndromeda (constellation)Andromeda is a constellation in the northern sky. It is named after Andromeda, the princess in the Greek legend of Perseus who was chained to a rock to be eaten by the sea monster Cetus... - The Saros number of
- the solar eclipseSolar eclipseAs seen from the Earth, a solar eclipse occurs when the Moon passes between the Sun and the Earth, and the Moon fully or partially blocks the Sun as viewed from a location on Earth. This can happen only during a new moon, when the Sun and the Moon are in conjunction as seen from Earth. At least...
series which began on 123 June and ended on 1385 July. The duration of Saros series 97 was 1262.1 years, and it contained 71 solar eclipses. - the lunar eclipseLunar eclipseA lunar eclipse occurs when the Moon passes behind the Earth so that the Earth blocks the Sun's rays from striking the Moon. This can occur only when the Sun, Earth, and Moon are aligned exactly, or very closely so, with the Earth in the middle. Hence, a lunar eclipse can only occur the night of a...
series which began on 425 March and ended on 1723 May. The duration of Saros series 97 was 1298.1 years, and it contained 73 lunar eclipses.
- the solar eclipse
In other fields
Ninety-seven is:- The year AD 9797Year 97 was a common year starting on Sunday of the Julian calendar. At the time, it was known as the Year of the Consulship of Augustus and Rufus...
, 97 BC97 BCYear 97 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Lentulus and Crassus...
, or 1997. - The atomic numberAtomic numberIn chemistry and physics, the atomic number is the number of protons found in the nucleus of an atom and therefore identical to the charge number of the nucleus. It is conventionally represented by the symbol Z. The atomic number uniquely identifies a chemical element...
of berkeliumBerkeliumBerkelium , is a synthetic element with the symbol Bk and atomic number 97, a member of the actinide and transuranium element series. It is named after the city of Berkeley, California, the location of the University of California Radiation Laboratory where it was discovered in December 1949...
, an actinide. - The number of different characters that can be used with a standard English KeyboardKeyboard (computing)In computing, a keyboard is a typewriter-style keyboard, which uses an arrangement of buttons or keys, to act as mechanical levers or electronic switches...
. - The number of leap days that the Gregorian calendarGregorian calendarThe Gregorian calendar, also known as the Western calendar, or Christian calendar, is the internationally accepted civil calendar. It was introduced by Pope Gregory XIII, after whom the calendar was named, by a decree signed on 24 February 1582, a papal bull known by its opening words Inter...
contains in its cycle of 400 years. is close to the fraction of a day by which an average tropical year exceeds 365 days, so with this proportion of leap years, the calendar does not accumulate seasonal drift of a full day until after more than 3000 years. - The designation of Interstate 97Interstate 97Interstate 97 is an intrastate Interstate Highway located entirely within Anne Arundel County, Maryland, United States. It runs from Annapolis at the overlapped section of US 50, US 301, and the unsigned I-595 to Baltimore at the city's beltway...
, a freeway in MarylandMarylandMaryland is a U.S. state located in the Mid Atlantic region of the United States, bordering Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware to its east...
, the shortest Interstate freeway in the continental United States - British Columbia Highway 97 is the longest continuously-numbered route in the province, from the Canada/U.S. border at Osoyoos to the British Columbia/Yukon border
- U.S. Route 97U.S. Route 97U.S. Route 97 is a major north–south United States highway in the western United States. It begins at a junction with Interstate 5 at Weed, California, and travels north, ending in Okanogan County, Washington, at the Canadian Border, across from Osoyoos, British Columbia, becoming British...
is a United States highway from Weed, California, to Okanogon County, Washington - OC Transpo Route 97OC Transpo Route 97OC Transpo Route 97 is a major transitway route that serves important areas across the City of Ottawa including the downtown core and the Ottawa International Airport. It starts at Bayshore Station near the Bayshore Shopping Centre and ends at either South Keys or the Airport. Several trips each...
, A TransitwayOttawa Rapid TransitIn Ottawa, Ontario, Canada, the public transit service operated by OC Transpo has two rapid transit systems: the Transitway, a bus rapid transit network, and the O-Train, a diesel-powered light rail transit service operated on one line.-Major routes:...
bus route in OttawaOttawaOttawa is the capital of Canada, the second largest city in the Province of Ontario, and the fourth largest city in the country. The city is located on the south bank of the Ottawa River in the eastern portion of Southern Ontario...
, Ontario - The 97th United States Congress97th United States CongressThe Ninety-seventh 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, DC from January 3, 1981 to January 3, 1983, during the final weeks of...
met during the Ronald ReaganRonald ReaganRonald Wilson Reagan was the 40th President of the United States , the 33rd Governor of California and, prior to that, a radio, film and television actor....
administration, from January 1981 to January 1983 - The 10-97 police codePolice codeA police code is a number abbreviation for a crime, incident or instructions for police officers.-The Hundred Code:The Hundred Code is a 3 digit police code system...
means "arrived on the scene" - STS-97STS-97STS-97 was a Space Shuttle mission to the International Space Station 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 Module, and delivered supplies for the station's crew.-Crew:-Mission...
Space Shuttle EndeavourSpace Shuttle EndeavourSpace Shuttle Endeavour is one of the retired orbiters of the Space Shuttle program of NASA, the space agency of the United States. Endeavour was the fifth and final spaceworthy NASA space shuttle to be built, constructed as a replacement for Challenger...
mission launched November 30, 2000 - The 97th Infantry Division was a unit of the United States ArmyUnited States ArmyThe United States Army is the main branch of the United States Armed Forces responsible for land-based military operations. It is the largest and oldest established branch of the U.S. military, and is one of seven U.S. uniformed services...
in World War IWorld War IWorld War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...
and World War IIWorld War IIWorld War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...
. - Madden NFL 97Madden NFL 97Madden NFL 97 is the first Madden NFL football game to be created in the 32-bit gaming era. It was originally created for the PlayStation and Sega Saturn, but other versions were also released, including the 16 bit SNES....
was the first John MaddenJohn Madden (American football)John Earl Madden is a former American professional football player in the National Football League, a former Super Bowl-winning head coach with the Oakland Raiders in the American Football League and later the NFL, and a former color commentator for NFL telecasts. In 2006, he was inducted into...
NFL American footballAmerican footballAmerican football is a sport played between two teams of eleven with the objective of scoring points by advancing the ball into the opposing team's end zone. Known in the United States simply as football, it may also be referred to informally as gridiron football. The ball can be advanced by...
game to be created in the 32-bit gaming era. - 97 percent of the Earth's salt water is located in oceans and seas.
- 97 radio stations, such as Hot 97, New York City and 97XWSUN-FMWSUN-FM is a commercial modern rock music radio station in Tampa, Florida, broadcasting on 97.1 FM.-History:The station signed on sometime in the late-1970 on the 106.3 FM frequency as WHBS, a station that served primarily Pasco and northern Pinellas Counties. The station later became WVTY, then...
, Tampa, Florida
In music
- A song Baby Boy / Saturday Night '97 by WhigfieldWhigfieldSannie Charlotte Carlson , best known as Whigfield and also as Naan, is a Danish singer best known for the song "Saturday Night", a hugely popular single during the summer of 1994.-Biography:...
- The number of the Southern RailwaySouthern Railway (US)The Southern Railway is a former United States railroad. It was the product of nearly 150 predecessor lines that were combined, reorganized and recombined beginning in the 1830s, formally becoming the Southern Railway in 1894...
`train in the Wreck of the Old 97Wreck of the Old 97Old 97 was a Southern Railway train officially known as the Fast Mail. It ran from Washington DC to Atlanta, Georgia. On September 27, 1903 while en route from Monroe, Virginia, to Spencer, North Carolina, the train derailed at Stillhouse Trestle near Danville, Virginia...
, a ballad recorded by numerous artists, including Flatt and Scruggs, Woody GuthrieWoody GuthrieWoodrow Wilson "Woody" Guthrie is best known as an American singer-songwriter and folk musician, whose musical legacy includes hundreds of political, traditional and children's songs, ballads and improvised works. He frequently performed with the slogan This Machine Kills Fascists displayed on his...
, Johnny CashJohnny CashJohn R. "Johnny" Cash was an American singer-songwriter, actor, and author, who has been called one of the most influential musicians of the 20th century...
, Nine Pound HammerNine Pound HammerNine Pound Hammer is an American cowpunk band formed in 1985 by vocalist Scott Luallen and guitarist Blaine Cartwright in their hometown of Owensboro, Kentucky...
, and Hank SnowHank SnowClarence Eugene "Hank" Snow was a Canadian-American country music artist. He charted more than 70 singles on the Billboard country charts from 1950 until 1980...
. - The Old 97'sOld 97'sThe Old 97's are an alternative country band from Dallas, Texas. Formed in 1993, they have since released nine studio albums, two full extended plays, shared split duty on another, and have one live album. Their most recent release is The Grand Theatre, Volume Two...
are an alt-country band, which took their name from the song "The Wreck of the Old 97" - A song by Alkaline TrioAlkaline TrioAlkaline Trio is an American punk rock band that formed in McHenry, Illinois, in 1996. The band's line-up consists of Matt Skiba , Dan Andriano , and Derek Grant...
off their self titled album - The Marching 97, marching bandMarching bandMarching band is a physical activity in which a group of instrumental musicians generally perform outdoors and incorporate some type of marching with their musical performance. Instrumentation typically includes brass, woodwinds, and percussion instruments...
of Lehigh UniversityLehigh UniversityLehigh University is a private, co-educational university located in Bethlehem, Pennsylvania, in the Lehigh Valley region of the United States. It was established in 1865 by Asa Packer as a four-year technical school, but has grown to include studies in a wide variety of disciplines...
.
In sports
- The car number of Kurt BuschKurt BuschKurt Thomas Busch is an American NASCAR and NHRA driver. He drives the No. 22 Shell Oil Company/Pennzoil Dodge Charger in the NASCAR Sprint Cup Series, and will race on an "opportunity permitting" basis in the Pro Stock division of NHRA...
's Ford when he won the 2004 NASCAR Nextel Cup Series championship. - Don LarsenDon LarsenDonald James Larsen is a former Major League Baseball pitcher. During a 15-year baseball career, he pitched from 1953-67 for seven different teams. Larsen is best known for pitching the sixth perfect game in baseball history, doing so in game 5 of the 1956 World Series...
pitched a perfect game in Game 5 of the 1956 World Series1956 World SeriesThe 1956 World Series of Major League Baseball was played between the New York Yankees and the defending champion Brooklyn Dodgers during the month of October 1956. The Series was a rematch of the 1955 World Series...
on October 8, 1956. He threw a total 97 pitches