191 (number)

Updated on Sep 21, 2024

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191 192 → Factorization 191 Roman numeral CXCI		Cardinal one hundred ninety-one Prime yes
Ordinal 191st(one hundred and ninety-first)

191 (one hundred [and] ninety-one) is the natural number following 190 and preceding 192.

In mathematics

191 is an odd number

191 is a centered 19-gonal number

191 is a deficient number, as 1 is less than 191

191 is a lazy caterer, number of slices a circle can be made into (19 slices can divide 191 pieces)

191 is an odious number

191 is a prime number

Chen prime

Eisenstein prime with no imaginary part

Gaussian prime

Palindromic prime, in base 10

Part of a prime quadruplet of four primes: 191, 193, 197, and 199

Sophie Germain prime

Strong prime

Twin prime that differs from another prime number (193) by 2

191 is a square-free number

191 is a Thabit number

191 is an undulating number

In astronomy

191 Kolga is a large and dark Main belt asteroid

3C 191 is a quasar located in the constellation Cancer

In emergency telephone numbers

1-9-1 is the emergency phone number in:

Brazil for the Federal Highway Police

Ghana for the police

Greece for a forest fire

Thailand for the police

France for the aeronautical emergencies

In Australia dialing 191 will redirect you to 000, Australia's Emergency telephone number.

In geography

191 Peachtree Tower at 191 Peachtree Street is the fourth tallest skyscraper in Atlanta

191 North Wacker is a 37-story skyscraper in Chicago

Marquis No. 191, Saskatchewan is a rural municipality in Saskatchewan, Canada

In the military

191st Air Refueling Squadron unit of the Utah Air National Guard

191st Airlift Group unit the Michigan Air National Guard at Selfridge ANGB, Michigan

191st Battalion, CEF was a unit of the Canadian Expeditionary Force in Southern Alberta, Canada

191st Infantry Brigade formed as part of the United States Army Reserve's 95th Division

Focke-Wulf Fw 191 was a prototype German bomber aircraft of World War II

No. 191 Squadron RAF a Royal Air Force squadron from 1917–1919, and 1943–1945

Special Order 191 was a military order issued by Confederate Army General Robert E. Lee in the Maryland Campaign of the American Civil War

USNS Benjamin Isherwood (T-AO-191) is a United States Navy Henry J. Kaiser-class fleet replenishment oiler

USS Coffman (DE-191) was a United States Navy Cannon-class destroyer escort during World War II

USS Frigate Bird (AMS-191) was a United States Navy Bluebird-class motor minesweeper during the 1950s

USS Lebanon (AK-191) was a United States Navy C1-M-AV1-type cargo ship during World War II

USS Mason (DD-191) was a United States Navy Clemson-class destroyer during World War II

USS Pondera (APA-191) was a United States Navy Haskell-class attack transport during World War II

USS Sculpin (SS-191) was a United States Navy Sargo-class submarine during World War II

USS Vandalia (IX-191) was a United States Navy a twin-screw, steel-hulled tanker during World War II

VF-191, Satan's Kittens, was a fighter squadron of the United States Navy during World War II

In movies

The 2008 movie “Highway 191”

In sports

Jordan 191 was the first Formula One car built by Jordan Grand Prix, and participated in the 1991 Formula One season

In transportation

RD-191, a Russian high performance single-combustion chamber rocket engine

191st Street (IRT Broadway – Seventh Avenue Line), a New York City Subway station at St. Nicholas Avenue in Manhattan served by the 1 train

At least five known plane crashes have involved flights numbered 191; as a result, the number is considered unlucky in the airline industry and has been withdrawn from use in some airlines

In other fields

191 is also:

The year AD 191 or 191 BC

The atomic number of an element temporarily called Unennunium

Minuscule 191 is a Greek minuscule manuscript of the New Testament, on parchment

Bose Virtually Invisible 191 speakers

References

191 (number) Wikipedia

(Text) CC BY-SA

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