| 释义 |
- In mathematics
- In astronomy
- In computing
- In the military
- In transportation
- In other fields
- See also
- External links
{{Use mdy dates|date=June 2013}}{{Infobox number
| number = 178
| divisor = 1, 2, 89, 178
}}178 (one hundred [and] seventy-eight) is the natural number following 177 and preceding 179. In mathematics- 178 is a deficient number, as 92 is less than 178
- 178 is a semiprime, a product of two primes, namely 2 and 89
- 178 is a square-free number
- 178 is the sum of 2 square numbers: (13)2 + (3)2
- 178 is a 31-gonal number
- 178 is a digitally balanced number, as its binary number (10110010) has an equal number of zeros and ones
- 178 is palindromic in 3 consecutive bases = 4546 = 3437 = 2628
In astronomy- 178 Belisana is a rocky main belt asteroid
- 178P/Hug-Bell is a periodic comet in our solar system
- Arp 178 is a triplet of galaxies, in the constellation Boötes: NGC 56, NGC 5614, and NGC 5615
In computing- DO-178B, Software Considerations in Airborne Systems and Equipment Certification is a guidance for software development
- INTEGRITY-178B is a royal-free ARINC 653–compliant real-time operating system
In the military- 178th Battalion, CEF unit in the Canadian Expeditionary Force during World War I
- 178th Airlift Squadron unit of the North Dakota Air National Guard
- Blohm & Voss P 178 was an experimental jet-powered dive bomber during World War II
- Panhard 178 was an advanced French reconnaissance 4×4 armoured car during World War II
- {{USNS|Flyer|T-AG-178}} was a U.S. Navy miscellaneous auxiliary, bathymetric Survey Ship during World War II
- {{USNS|Frederick Funston|T-AP-178}} was a U.S. Navy {{sclass-|Frederick Funston|attack transport}} during World War II
- {{USS|Fairfield|AK-178}} was a U.S. Navy Alamosa-class cargo ship during World War II
- {{USS|Herzog|DE-178}} was a U.S. Navy {{sclass-|Cannon|destroyer escort}} during World War II
- {{USS|Hogan|DD-178}} was a U.S. Navy {{sclass-|Wickes|destroyer}} during World War II
- {{USS|Lander|APA-178}} was a U.S. Navy {{sclass-|Haskell|attack transport}} during World War II
- {{USS|Permit|SS-178}} was a U.S. Navy Porpoise-class submarine during World War II
- {{USS|Tunica|ATA-178}} was a U.S. Navy Sotoyomo-class auxiliary fleet tugboat during World War II
In transportation- Heinkel He 178 was the world's first aircraft to fly under turbojet power
- 178th-179th Street Tunnels are defunct vehicular tunnels in Upper Manhattan
- List of highways numbered 178
In other fields178 is also: - The year AD 178 or 178 BC
- 178 AH is a year in the Islamic calendar corresponds to 794 – 795 CE
- The atomic number of an element temporarily called Unseptoctium
- Minuscule 178 is a Greek minuscule manuscript of the New Testament
See also- United Nations Security Council Resolution 178
- United States Supreme Court cases, Volume 178
- Takao Ozawa v. United States, 260 U.S. 178 (1922)
- Pennsylvania House of Representatives, District 178
External links{{Commons category|178 (number)}}- Number Facts and Trivia: 178
- The Number 178
- The Positive Integer 178
- Number Gossip: 178
{{Integers|1}}{{DEFAULTSORT:178 (Number)}} 1 : Integers |