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145 (number)

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145
  
146 →

Factorization
  
5 × 29

Roman numeral
  
CXLV

Cardinal
  
one hundred forty-five

Divisors
  
1, 5, 29, 145

Ordinal
  
145th(one hundred and forty-fifth)

145 (one hundred [and] forty-five) is the natural number following 144 and preceding 146.

Contents

In mathematics

  • Although composite, 145 is a pseudoprime.
  • Given 145, the Mertens function returns 0.
  • 145 is a pentagonal number and a centered square number.
  • 145 = 12 2 + 1 2 = 8 2 + 9 2 . 145 is the fourth number that is the sum of two different pairs of squares. Also, 145 is the result of 34 + 43, making it a Leyland number.
  • 145 = 1 ! + 4 ! + 5 ! , making it a factorion. The only other numbers that have the property that they are the sum of the factorials of their digits are 1, 2 and 40585.

    • In the military

  • USS Armada (AM-145) was a United States Navy Admirable minesweeper ship during World War II
  • USS Colbert (APA-145) was a United States Navy Haskell class attack transport during World War II
  • USS General Harry Taylor (AP-145) was a United States Navy General G. O. Squier transport ship during World War II
  • USS Greer (DD-145) was a United States Navy Wickes class destroyer during World War II
  • USS Huse (DE-145) was a United States Navy Edsall class destroyer during World War II
  • USS Roanoke (CL-145) was a United States Navy cruiser following World War II

    • In sports

  • The Grand Union Canal Race is a 145-mile ultramarathon from Birmingham to London along the Grand Union Canal

    • In transportation

  • Eurocopter EC 145 is a twin-engine light utility helicopter
  • The Delahaye 145 Sports Car from 1938
  • The Alfa Romeo 145 car produced between 1994 and 2001
  • Volvo 145 Express station wagon
  • ERJ 145 regional jets produced by Embraer
  • Golden Gate Transit Bus Route 145
  • London Bus Route 145

    • In other fields

    145 is also:

  • The year AD 145 or 145 BC
  • 145 AH is a year in the Islamic calendar that corresponds to 762 – 763 CE
  • 145 Adeona is a large Main belt asteroid
  • Psalm 145
  • Sonnet 145
  • Apple Computer laptops, such as the PowerBook 145 and PowerBook 145B
  • Puff Daddy song “Picture it” includes the lyrics “in something foreign soarin’ 145”
  • 145th Street blues band
  • Tsuu T'ina Nation 145 Indian reserve in Alberta, Canada
  • The 2004 film “Love and 145 Watts” starring Jessica Baxter
  • 145 mg medicine tablets, as with Tricor
  • "One Four Five" is a song by The Cat Empire

    • References

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


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