199 (number)

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199 (one hundred [and] ninety-nine) is the natural number following 198 and preceding 200.

In mathematics[]

• 199 is the 46th prime number
• 199 is an odd number
• 199 is a centered triangular number
• 199 is a centered 33-gonal number
• 199 is a deficient number, as its aliquot sum, 1, is less than 199
• 199 is a Lucas number
  • 199 is a Chen prime
  • 199 is a permutable prime which can have its digits switched, and create another prime number (991)
  • 199 is a twin prime with 197
  • 199 is the sum of three consecutive primes: 61 + 67 + 71
  • 199 is the sum of five consecutive primes: 31 + 37 + 41 + 43 + 47
  • 199 is the fourth part of a prime quadruplet: 191, 193, 197, 199
• 199 is a square-free number
• 199 is an odious number
• 199 is the smallest natural number that takes more than two revolutions to get a Full Digital Root. D_t(199) = 1

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• 199 is the smallest positive integer d such that the imaginary quadratic field Q(√–d) has class number = 9.^[1]
• 199 is first prime number in a sequence of 10 consecutive prime numbers with common difference 210 (Tao and Green 2008; see R.Taschner "Die Farben der Quadratzahlen" p. 147) for k=10 the ten primes are 199+j*210; j=0 to 9; 199;199+210=409;409+210=619...1879+210=2089.

In geography[]

• 199 Fremont Street is a Class A office tower in San Francisco's South of Market district

In movies[]

• 199 Lives: The Travis Pastrana Story, a 2008 documentary on extreme-sports legend Travis Pastrana

In transportation[]

• London Buses route 199
• Arado Ar 199 was a floatplane, a low-wing monoplane, designed in 1938, of which two prototypes were built

In TV and radio[]

• 199 Park Lane is a 1965 British television soap opera on the BBC

In other fields[]

199 is also:

• The year AD 199 or 199 BC
• The atomic number of an element temporarily called Unennennium
• Minuscule 199 is a Greek minuscule manuscript of the New Testament, on parchment
• 199 Byblis is a large main belt asteroid

See also[]

• List of highways numbered 199
• United Nations Security Council Resolution 199
• United States Supreme Court cases, Volume 199
• Pennsylvania House of Representatives, District 199

References[]

External links[]

Wikimedia Commons has media related to 199 (number).

• Number Facts and Trivia: 199
• The Number 199
• Number Gossip: 199
• The Positive Integer 199
• Prime Curiosities: 199
• Virtual Science: 199