97 (number)
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Cardinal | ninety-seven | |||
Ordinal | 97th (ninety-seventh) | |||
Factorization | prime | |||
Prime | 25th | |||
Divisors | 1, 97 | |||
Greek numeral | ϞΖ´ | |||
Roman numeral | XCVII | |||
Binary | 11000012 | |||
Ternary | 101213 | |||
Senary | 2416 | |||
Octal | 1418 | |||
Duodecimal | 8112 | |||
Hexadecimal | 6116 |
97 (ninety-seven) is the natural number following 96 and preceding 98. It is a prime number and the only prime in the nineties.
In mathematics
97 is:
- the 25th .
- a Proth prime and a Pierpont prime as it is 3 × 25 + 1.[1]
- the eleventh member of the Mian–Chowla sequence.[2]
- a self number in base 10, since there is no integer that added to its own digits, adds up to 97.[3]
- the smallest odd prime that is not a cluster prime.[4]
- the highest two-digit number where the sum of its digits is a square.
- the number of primes <= 29.[5]
- The numbers 97, 907, 9007, 90007 and 900007 are all primes, and they are all × 32491.
- an emirp
- an isolated prime, since 95 and 99 aren't prime.
In science
Ninety-seven is:
- The atomic number of berkelium, an actinide.
In astronomy
- The New General Catalogue object NGC 97, an elliptical galaxy in the constellation Andromeda
In other fields
Ninety-seven is:
- The 97th United States Congress met during the Ronald Reagan administration, from January 1981 to January 1983
- The 10-97 police code means "arrived on the scene"
- STS-97 Space Shuttle Endeavour mission launched November 30, 2000
- The 97th Infantry Division was a unit of the United States Army in World War I and World War II
- Madden NFL 97 was the first John Madden NFL American football game to be created in the 32-bit gaming era
- Radio stations broadcasting on frequencies near 97, such as Hot 97, New York City and 97X, Tampa, Florida
- The decimal unicode number representing the Latin lowercase "a"[6]
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, a ballad recorded by numerous artists, including Flatt and Scruggs, Woody Guthrie, Johnny Cash, Nine Pound Hammer, and Hank Snow.
- The alt-countryband, 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 of Lehigh University.
- Chicago area (named after the elementary school District 97 in Oak Park, Illinois).
See also
References
- ^ "Sloane's A080076 : Proth primes". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
- ^ "Sloane's A005282 : Mian-Chowla sequence". The On-Line Encyclopedia of integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
- ^ "Sloane's A003052 : Self numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
- ^ Sloane, N. J. A. (ed.). "Sequence A038133 (Odd primes that are not cluster primes)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2022-08-19.
- ^ Sloane, N. J. A. (ed.). "Sequence A007053". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2022-06-02.
- ^ "Unicode Lookup: convert special characters". unicodelookup.com.