171 (number)
 |
| ||||
|---|---|---|---|---|
| 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 | |||
| Senary | 4436 | |||
| Octal | 2538 | |||
| Duodecimal | 12312 | |||
| Hexadecimal | AB16 | |||
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).
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
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 Template:Sclass- following World War I
- USS Carroll (DE-171) was a United States Navy Template:Sclass- during World War II
- USS Claiborne (AK-171) was a United States Navy Template:Sclass- during World War II
- USS Cuttlefish (SS-171) was a United States Navy Template:Sclass- during World War II
- USS Granville (APA-171) was a United States Navy Template:Sclass- 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 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
See also
- List of highways numbered 171
- United States Supreme Court cases, Volume 171
- United Nations Security Council Resolution 171
External links
Wikimedia Commons has media related to 171 (number).
- Number Facts and Trivia: 171
- Number Gossip: 171
- The Number 171
- The Positive Integer 171
- VirtueScience: 171
- Locomotive 171 Restoration Project
References
- ^ "Sloane's A051865 : 13-gonal (or tridecagonal) numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.