Neha Patil (Editor)

197 (number)

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197
  
198 →

Prime
  
yes

Factorization
  
197

Roman numeral
  
CXCVII

Cardinal
  
one hundred ninety-seven

Ordinal
  
197th (one hundred and ninety-seventh)

197 (one hundred [and] ninety-seven) is the natural number following 196 and preceding 198.

Contents

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
  • 197 is a palindromic prime in base 14 (101).
  • 197 is a square-free number
  • 197 is a super Catalan number
  • 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:

  • 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

    • References

    197 (number) Wikipedia
    (Text) CC BY-SA