Английская Википедия:161 (number)
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Шаблон:Infobox number 161 (one hundred [and] sixty-one) is the natural number following 160 and preceding 162.
In mathematics
- 161 is the sum of five consecutive prime numbers: 23, 29, 31, 37, and 41
- 161 is a hexagonal pyramidal number.[1]
- 161 is a semiprime. Since its prime factors 7 and 23 are both Gaussian primes, 161 is a Blum integer.
- 161 is a palindromic number[2]
- Шаблон:Sfrac is a commonly used rational approximation of the square root of 5 and is the closest fraction with denominator <300 to that number.
In the military
- Шаблон:USNS was a U.S. Navy Type T2 tanker during World War II
- Шаблон:USS was a U.S. Navy Шаблон:Sclass during World War II
- Шаблон:USS was a U.S. Navy Trefoil-class concrete barge during World War II
- Шаблон:USS was a U.S. Navy Шаблон:Sclass during World War II
- Шаблон:USS was a U.S. Navy Шаблон:Sclass during World War II
- Шаблон:USS was a U.S. Navy Шаблон:Sclass during World War II
- Шаблон:USS was a U.S. Navy wooden yacht during World War I
- Шаблон:USS was a U.S. Navy Шаблон:Sclass during World War II
- Шаблон:USS was a U.S. Navy Achomawi-class fleet ocean tug following World War II
- Шаблон:USS was a U.S. Navy fourth-group S-class submarine between 1920 and 1931
- Шаблон:USS is a fictional U.S. Navy diesel engine submarine featured in the 1996 film Down Periscope
- The 161st Intelligence Squadron unit of the Kansas Air National Guard. Its parent unit is the 184th Intelligence Wing
In music
- The Bose 161 Speaker System (2001)
- The Kay K-161 ThinTwin guitar
In transportation
In other fields
161 is also:
- The year AD 161 or 161 BC
- 161 AH is a year in the Islamic calendar that corresponds to 777 – 778 CE
- 161 Athor is an M-type Main belt asteroid
- E.161 is an ITU-T assigns letters to the 12-key telephone keypad
- Fiorina Fury 161 is a foundry facility and penal colony from the film Alien 3
- 161 is used by Anti Fascist Action as a code for AFA (A=1, F=6, by order of the alphabet), sometimes used in 161>88[3] (88 is code for Heil Hitler among neo-nazis, as H=8)
See also
- Anti-Fascist Action
- List of highways numbered 161
- United Nations Security Council Resolution 161
- United States Supreme Court cases, Volume 161
External links
References
Шаблон:Reflist Шаблон:Integers
