195 (number)
195 (one hundred [and] ninety-five) is the natural number following 194 and preceding 196.
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| Cardinal | one hundred ninety-five | |||
| Ordinal | 195th (one hundred ninety-fifth) | |||
| Factorization | 3 × 5 × 13 | |||
| Greek numeral | ΡϞΕ´ | |||
| Roman numeral | CXCV | |||
| Binary | 110000112 | |||
| Ternary | 210203 | |||
| Octal | 3038 | |||
| Duodecimal | 14312 | |||
| Hexadecimal | C316 | |||
In mathematics
- 195 is an odd number
- 195 is a composite number
- 195 is a deficient number, as 141 is less than 195
- 195 is a Harshad number
- 195 is a lucky number
- 195 is a sphenic number, in the middle of the prime quadruplet 191, 193, 197 and 199
- 195 is a square-free number
- 195 is the sum of eleven consecutive primes: 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29 + 31 + 37
- Although not itself prime, 195 passes through Ulam's sieve and thus is a lucky number
- 195 is the smallest number expressed as a sum of distinct squares in 16 different ways (sequence A097563 in the OEIS)
- 195 is both a 21-gonal[1] and 66-gonal number
In astronomy
- IC 195 is a galaxy. It is part of the Arp 290 pair of galaxies, along with IC 196
- 195 Eurykleia is a large main belt asteroid
In geography
- 195 Broadway is a 29-story building in the Financial District of New York City
In the military
- 195th Fighter Squadron unit of the Arizona Air National Guard
- Battalion, CEF was a unit in the Canadian Expeditionary Force during World War I
- USNS Leroy Grumman (T-AO-195) a United States Navy Henry J. Kaiser-class fleet replenishment oiler
- USS Lenawee (APA-195) was a United States Navy Haskell-class attack transport during World War II
- USS Limpkin (AMS-195) was a United States Navy Falcon-class motor minesweeper from 1954–1968
- USS Midland (AK-195) was a United States Navy Alamosa-class cargo ship during World War II
- USS Sealion (SS-195) was a United States Navy Sargo-class submarine prior to World War II
- USS Thornhill (DE-195) was a United States Navy Cannon-class destroyer escort during World War II
- USS Welborn C. Wood (DD-195) was a United States Navy Clemson-class destroyer during World War II
- Strike Fighter Squadron 195 is a United States Navy F/A-18C Hornet fighter squadron at Naval Air Facility Atsugi
- RMS Franconia was an ocean liner which was sunk by German torpedoes 195 miles east of Malta in 1916
In transportation
- Cessna 195 was a light radial engine powered general aviation aircraft between 1947–1954
- Ferrari 195 Inter was a GT car produced by Ferrari in 1950
- Ferrari 195 S was a racing sports car produced by Ferrari in 1950
- London Buses route 195
- The Embraer 195 jet
In other fields
195 is also:
- The year AD 195 or 195 BC
- The atomic number of an element temporarily called Unennpentium
- Minuscule 195 is a Greek minuscule manuscript of the New Testament, on parchment
See also
External links
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Wikimedia Commons has media related to 195 (number). |
References
- Sloane, N. J. A. (ed.). "Sequence A051873 (21-gonal numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
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