166 (number)

From Wikipedia, the free encyclopedia
← 165 166 167 →
160 161 162 163 164 165 166 167 168 169
List of numbersIntegers
0 100 200 300 400 500 600 700 800 900
Cardinalone hundred sixty-six
Ordinal166th
(one hundred sixty-sixth)
Factorization2 × 83
Divisors1, 2, 83, 166
Greek numeralΡΞϚ´
Roman numeralCLXVI
Binary101001102
Ternary200113
Octal2468
Duodecimal11A12
HexadecimalA616

166 (one hundred [and] sixty-six) is the natural number following 165 and preceding 167.

In mathematics[]

166 is an even number and a composite number. It is a centered triangular number.[1]

Given 166, the Mertens function returns 0. 166 is a Smith number in base 10.[2]

In astronomy[]

  • 166 Rhodope is a dark main belt asteroid, in the Adeona family of asteroids
  • 166P/NEAT is a periodic comet and centaur in the outer Solar System
  • HD 166 is the 6th magnitude star in the constellation Andromeda

In the military[]

  • was the official photo unit in the 89th Division of George Patton's Third Army in World War II
  • Convoy ON-166 was the 166th of the numbered ON series of merchant ship convoys outbound from the British Isles to North America departing February 11, 1943
  • Marine Medium Helicopter Squadron 166 is a United States Marine Corps helicopter
  • USCGC Tamaroa (WMEC-166) was a United States Coast Guard cutter during World War II
  • USS Alcedo (SP-166) was a United States Navy yacht. She was the first American vessel lost in World War I
  • USS Baron (DE-166) was a United States Navy Cannon-class destroyer escort during World War II
  • USS Bush (DD-166) was a United States Navy Wickes-class destroyer during the World War I
  • USS Cabell (AK-166) was a United States Navy cargo ship during World War II
  • USS Fond du Lac (APA-166) was a United States Navy Haskell-class attack transport ship during World War II
  • USS Jamestown (AGTR-3/AG-166) was a United States Navy Oxford-class technical research ship following World War II

In sports[]

  • Sam Thompson’s 166 RBIs in 1887 stood as a Major League Baseball record until Babe Ruth broke the record in 1921

In transportation[]

In other fields[]

166 is also:

  • The year AD 166 or 166 BC
  • The atomic number of an element temporarily called Unhexhexium

See also[]

External links[]

References[]

  1. ^ "Sloane's A005448 : Centered triangular numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
  2. ^ "Sloane's A006753 : Smith numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
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