197 (number)
197 (one hundred [and] ninety-seven) is the natural number following 196 and preceding 198.
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| 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 | |||
| Quaternary | 30114 | |||
| Quinary | 12425 | |||
| Senary | 5256 | |||
| Octal | 3058 | |||
| Duodecimal | 14512 | |||
| Hexadecimal | C516 | |||
| Vigesimal | 9H20 | |||
| Base 36 | 5H36 | |||
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
gollark: It'll probably be a while before there are actually space habitats that big, and more having to be done technologically probably means more failures.
gollark: If they fail on a space habitat, I probably die horribly and can't easily get help from somewhere nearby.
gollark: If the power or water supply fail here, I'll probably be somewhat uncomfortable until they're restored, but be basically fine, at least as long as they're available somewhere not too far away.
gollark: No, the requirements on a space habitat are higher.
gollark: I probably don't want to be somewhere which relies on infrastructure continuously flawlessly operating for me to not die, considering.
See also
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.
External links
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Wikimedia Commons has media related to 197 (number). |
- Number Facts and Trivia: 197
- The Number 197
- Number Gossip: 197
- The Positive Integer 197
- Virtual Science: 197
- Prime Curiosities: 197
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