185 (number)

185 (one hundred [and] eighty-five) is the natural number following 184 and preceding 186.

← 184 185 186 →
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Cardinal	one hundred eighty-five
Ordinal	185th (one hundred eighty-fifth)
Factorization	5 × 37
Greek numeral	ΡΠΕ´
Roman numeral	CLXXXV
Binary	101110012
Ternary	202123
Octal	2718
Duodecimal	13512
Hexadecimal	B916

In mathematics

• 185 is an odd number
• 185 is a composite number
• 185 is a deficient number, as 43 is less than 185
• 185 is an odious number
• 185 is a square-free number
• Divisors of 185: 1, 5, 37, 185
• 185 is the sum of two square numbers in two different ways: 13²+ 4² and 11² + 8²
• 185 is the difference of 2 square numbers: 21² - 16²
• 185 is a 20-gonal number[1]

In astronomy

• 185 Eunike is a large, dark, main belt asteroid
• NGC 185 is a dwarf elliptical galaxy in the constellation Cassiopeia
• SN 185 was a supernova which appeared in the year 185, between the constellations Circinus and Centaurus

In the military

• 185 Airborne Division Folgore of the Italian Army during World War II
• 185th Air Refueling Squadron unit of the Oklahoma Air National Guard
• 185th Aviation Brigade of the United States Army is a unit of the Mississippi Army National Guard
• 185th Canadian Infantry Battalion (Cape Breton Highlanders), CEF
• 185th Infantry Brigade (United Kingdom) unit of the British Expeditionary Force during World War II
• 185th Infantry Regiment (United States) is a combat regiment of the United States Army from the California Army National Guard
• German destroyer Lütjens (D185) was a guided missile destroyer of the Bundesmarine (West German Navy)
• HMS Avenger (F185) was a Royal Navy Type 21 frigate from 1975–1994
• HMS Decoy (1894) was a Royal Navy Daring-class destroyer
• Polikarpov I-185 was a Soviet fighter aircraft designed in 1941, but never produced
• RMAS Salmoor (A185), a Royal Maritime Auxiliary Service SAL-class mooring and salvage vessel
• US Air Force 185th Air Refueling Wing unit at Sioux Gateway Airport
• USS Bagley (DD-185) was a United States Navy Wickes-class destroyer following World War I
• USS Koka (ATA-185) was a United States Navy tugboat destroyer during World War II
• USS Riddle (DE-185) was a United States Navy during World War II
• USS Snapper (SS-185) was a United States Navy Salmon-class submarine during World War II

In music

• Yamaha PSR-185 portable musical keyboard by the Yamaha Corporation

In transportation

• Alfa Romeo 185T Formula One car
• British Rail Class 185
• VP185 - an engine for the British Rail Class 43 (HST), to replace the Paxman Valenta
• Cessna 185 single-engine plane
• London Buses route 185
• 185 series Multiple unit trains in Japan
• Willow Creek/Southwest 185th Avenue Transit Center, Hillsboro, Oregon
• Air Tahoma Flight 185 was a scheduled cargo flight from Memphis to Cincinnati which crashed August 13, 2004
• SilkAir Flight 185, was a scheduled passenger flight from Jakarta, Indonesia to Singapore, which crashed December 19, 1997, the subject of a documentary

In other fields

185 is also:

• The year AD 185 or 185 BC
• The atomic number of an element temporarily called Unoctpentium
• The improv game of 185[2] where, given a subject from the audience, players make up jokes beginning with "185 (blanks) walk into a bar." (The number in this case is completely arbitrary, but is 185 by tradition)
• Minuscule 185 is a Greek minuscule manuscript of the New Testament, on parchment
• Kevin St. Onge set a Guinness World Record by throwing a single playing card 185 feet (56 m) and one inch on June 12, 1979
• Rotax 185 is a 9 hp (7 kW), single cylinder, two-stroke, industrial engine, built by Rotax of Austria for fire fighting

See also

• I-185 (disambiguation)
• List of highways numbered 185
• United Nations Security Council Resolution 185
• United States Supreme Court cases, Volume 185
• PS 185, John M. Langston, New York City
• Pennsylvania House of Representatives, District 185

References

1. "Sloane's A051872 : 20-gonal numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
2. "185 - The Joke Game". Archived from the original on 2009-10-21.

External links

• Number Facts and Trivia: 185
• The Number 185
• The Positive Integer 185
• Prime curiosities: 185
• Number Gossip: 185
• VirtueScience: 185