171 (number)

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Cardinal	one hundred seventy-one
Ordinal	171st; (one hundred seventy-first)
Factorization	32× 19
Divisors	1, 3, 9, 19, 57, 171
Greek numeral	ΡΟΑ´
Roman numeral	CLXXI
Binary	101010112
Ternary	201003
Quaternary	22234
Quinary	11415
Senary	4436
Octal	2538
Duodecimal	12312
Hexadecimal	AB16
Vigesimal	8B20
Base 36	4R36

171 (one hundred [and] seventy-one) is the natural number following 170 and preceding 172.

In mathematics

171 is an odd number, a composite number, and a deficient number. It is also a triangular number, a tridecagonal number^[1] and a 58-gonal number.

171 is a Harshad number, a palindromic number, and an undulating number. 171 is a repdigit in base 7 (333), and also in bases 18, 56, and 170.

In astronomy

171P/Spahr is a periodic comet in our solar system
171 Ophelia is a main belt asteroid, a member of the Themis family of asteroids

In geography

Fox Valley No. 171, Saskatchewan, Canada

In the military

171st Air Refueling Squadron unit of the Michigan Air National Guard flies the KC-135T Stratotanker
US Air Force 171st Air Refueling Wing Air Mobility Command unit of the Pennsylvania Air National Guard
171st Battalion was a unit based in Quebec City, Quebec in the Canadian Expeditionary Force during World War I
US Army 171st Infantry Brigade based at Fort Jackson, South Carolina
USS Burns (DD-171) was a United States Navy Wickes-class destroyer following World War I
USS Carroll (DE-171) was a United States Navy Cannon-class destroyer escort during World War II
USS Claiborne (AK-171) was a United States Navy Alamosa-class cargo ship during World War II
USS Cuttlefish (SS-171) was a United States Navy Cachalot-class submarine during World War II
USS Granville (APA-171) was a United States Navy Haskell-class attack transport during World War II
USS Quest (SP-171) was a United States Navy patrol boat during World War I
USS Storm King (AP-171) was a United States Navy Storm King-class auxiliary transport during World War II
Australian Army 171st Aviation Squadron helicopter squadron at Holsworthy Barracks near Sydney

In the penal code

Section 171 of the Cyprus Penal code
Article 171 of the Penal code of Brazil, defines the crime of estelionato (defrauding the unwary, i.e. a "scam" or "confidence trick"). Because of it, in Brazilian Portuguese, um-sete-um (literally, one-seven-one) became a synonym for "scam", and also "swindler" or "compulsive liar".
Article 171 of the Philippines Penal Code (falsification of public documents)

In sports

Johnny Bright rushed for a record 171 yards in the Canadian Football League 44th Grey Cup game on November 24, 1956

In transportation

In other fields

171 is also:

The year AD 171 or 171 BC
E171 (Titanium dioxide)
In binary form (10101011), the preamble in a Specific Area Message Encoding header in the Emergency Alert System
The Compaq 171FS computer monitor
JWH-171, an analgesic drug that acts as a cannabinoid receptor agonist
Minuscule 171, a Greek minuscule manuscript of the New Testament, on parchment
SJK 171, one of the earliest New York City graffiti artists of the late 1960s and 1970s
171, the Venezuelan emergency telephone number

External links

References

↑ "Sloane's A051865 : 13-gonal (or tridecagonal) numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.

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[1] "Sloane's A051865 : 13-gonal (or tridecagonal) numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.