| ||||
|---|---|---|---|---|
| Cardinal | one hundred ninety-seven | |||
| Ordinal | 197th (one hundred ninety-seventh) | |||
| Factorization | prime | |||
| Prime | 45th | |||
| Greek numeral | ΡϞΖ´ | |||
| Roman numeral | CXCVII | |||
| Binary | 110001012 | |||
| Ternary | 210223 | |||
| Octal | 3058 | |||
| Duodecimal | 14512 | |||
| Hexadecimal | C516 | |||
197 (one hundred [and] ninety-seven) is the natural number following 196 and preceding 198.
In mathematics
- 197 is an odd number
- 197 is a prime number
- 197 is a Chen prime
- 197 is an Eisenstein prime with no imaginary part
- 197 is a strong prime
- 197 is a twin prime with 199
- 197 is the third of a prime quadruplet: 191, 193, 197, 199
- 197 is the smallest prime number that is the sum of 7 consecutive primes: 17 + 19 + 23 + 29 + 31 + 37 + 41
- 197 is the sum of the first twelve prime numbers: 2 + 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29 + 31 + 37
- 197 is a centered heptagonal number, a centered figurate number that represents a heptagon with a dot in the center and all other dots surrounding the center dot in successive heptagonal layers
- 197 is a deficient number, as 1 is less than 197
- 197 is a Keith or repfigit number[1]
- 197 is a palindromic prime in base 14 (101).
- 197 is a square-free number
- 197 is a super Catalan number[2]
- 197 is an Ulam number
- 197 is the sum of the digits of all two-digit prime numbers: 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97
In geography
- 197 Yonge Street, site of the former Canadian Bank of Commerce building
- House at 197 Hornbine Road, Rehoboth, Massachusetts
- House at 197 Morrison Avenue, Somerville, Massachusetts
In music
- "197" is a song by Norwegian alternative rock group Major Parkinson from their self-titled debut album
In other fields
197 is also:
- A police emergency telephone number in Tunisia
- The year AD 197 or 197 BC
- The atomic number of an element temporarily called Unennseptium
- 197 Arete is a Main belt asteroid. It has a very bright surface, unusually bright even for a rocky S-type asteroid
- Minuscule 197 is a Greek minuscule manuscript of the New Testament, on parchment
See also
- List of highways numbered 197
- United Nations Security Council Resolution 197
- United States Supreme Court cases, Volume 197
- Pennsylvania House of Representatives, District 197
- Polo Independent Order of Odd Fellows Lodge No. 197
- P.S. 197, Brooklyn, New York
References
- ^ "Sloane's A007629 : Repfigit numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
- ^ "Sloane's A001003 : Schroeder's second problem (generalized parentheses); also called super-Catalan numbers or little Schroeder numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.