| 释义 |
- In mathematics
- In astronomy
- In geography
- In the military
- In the penal code
- In sports
- In transportation
- In other fields
- See also
- External links
- References
{{example farm|date=January 2012}}{{Infobox number
| number = 171
| divisor=1, 3, 9, 19, 57, 171
}}171 (one hundred [and] seventy-one) is the natural number following 170 and preceding 172. In mathematics171 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 {{sclass-|Wickes|destroyer}} following World War I
- {{USS|Carroll|DE-171}} was a United States Navy {{sclass-|Cannon|destroyer escort}} during World War II
- {{USS|Claiborne|AK-171}} was a United States Navy {{sclass-|Alamosa|cargo ship}} during World War II
- {{USS|Cuttlefish|SS-171}} was a United States Navy {{sclass-|Cachalot|submarine}} during World War II
- {{USS|Granville|APA-171}} was a United States Navy {{sclass-|Haskell|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- British Rail Class 171
- London Buses route 171
- SMRT Bus Service 171
In other fields171 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
See also- Mike 171
- List of highways numbered 171
- United States Supreme Court cases, Volume 171
- United Nations Security Council Resolution 171
External links{{Commons category|171 (number)}}- Number Facts and Trivia: 171
- Number Gossip: 171
- The Number 171
- The Positive Integer 171
- VirtueScience: 171
- [https://web.archive.org/web/20090730023811/http://www.wfprr.com/171/index.html Locomotive 171 Restoration Project]
References 1. ^{{Cite web|url=https://oeis.org/A051865|title=Sloane's A051865 : 13-gonal (or tridecagonal) numbers|last=|first=|date=|website=The On-Line Encyclopedia of Integer Sequences|publisher=OEIS Foundation|access-date=2016-05-28}}
{{Integers|1}}{{DEFAULTSORT:171 (Number)}} 1 : Integers |