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173 (number)

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173
  
174 →

Prime
  
40th

Factorization
  
prime

Divisors
  
1, 173

Cardinal
  
one hundred seventy-three

Ordinal
  
173rd(one hundred and seventy-third)

173 (one hundred [and] seventy-three) is the natural number following 172 and preceding 174.

Contents

In mathematics

173 is:

  • an odd number.
  • a deficient number.
  • an odious number.
  • a balanced prime.
  • an Eisenstein prime with no imaginary part.
  • a Sophie Germain prime.
  • an inconsummate number.
  • the sum of 2 squares: 22 + 132.
  • the sum of three consecutive prime numbers: 53 + 59 + 61.
  • palindromic in bases 3 (201023), 9 (2129) and 172 (11172).

    • In astronomy

  • 173 Ino is a large dark main belt asteroid
  • 173P/Mueller is a periodic comet in our solar system
  • Arp 173 (VV 296, KPG 439) is a pair of galaxies in the constellation Boötes

    • In the military

  • 173rd Air Refueling Squadron unit of the Nebraska Air National Guard
  • 173rd Airborne Brigade Combat Team of the United States Army based in Vicenza
  • 173rd Battalion unit of the Canadian Expeditionary Force during the World War I
  • 173rd Surveillance Squadron (Australia) of the Australian Army at Oakey, Queensland
  • K-173 Chelyabinsk Russian Oscar class SSGN submarine at the Rybachiy Nuclear Submarine Base in Vilyuchinsk
  • USNS Provo (T-AG-173) was a U.S. Navy Phoenix-class auxiliary ship following World War II
  • USS Codington (AK-173) was a U.S. Navy Alamosa-class cargo ship during World War II
  • USS Eldridge (DE-173) was a U.S. Navy Cannon-class destroyer escort during World War II
  • USS Etamin (IX-173) was a U.S. Navy Crater-class cargo ship during World War II
  • USS Florence (SP-173) was a U.S. Navy yacht during World War I
  • USS Hyde (APA-173) was a U.S. Navy Haskell-classattack transport ship during World War II
  • USS PC-472 was a 173-foot (53 m) U.S. Navy submarine chaser during World War II
  • USS Pike (SS-173) was a U.S. Navy Porpoise class submarine diesel-electric submarine during World War II
  • USS Sproston (DD-173) was a U.S. Navy Wickes class destroyer following World War II
  • Vought V-173 (Flying Pancake) was a U.S. Navy experimental test aircraft during World War II

    • In transportation

  • The Georgia Railroad, the world longest railroad in 1845, ran for 173 miles (278 km) from Augusta to Marthasville (Atlanta, Georgia)
  • United Airlines Flight 173 en route from Denver to Portland crashed on December 28, 1978
  • The Velocity 173 was a kit aircraft produced by Velocity Aircraft in the early '90s.

    • In other fields

    173 is also:

  • The year AD 173 or 173 BC
  • 173 AH is a year in the Islamic calendar that corresponds to 789 – 790 CE
  • The atomic number of an element temporarily called Unsepttrium
  • The book "173 Hours in Captivity" (2000)
  • Topic of discussion during the podcast "Skeptics with a K" episode 180

    • References

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


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