195 (number)

195 (one hundred [and] ninety-five) is the natural number following 194 and preceding 196.

← 194 195 196 →
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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

• VFA-195
• List of highways numbered 195
• United Nations Security Council Resolution 195
• United States Supreme Court cases, Volume 195
• Pennsylvania House of Representatives, District 195

External links

• Number Facts and Trivia: 195
• The Number 195
• Number Gossip: 195
• The Positive Integer 195
• Virtual Science: 195

References

1. Sloane, N. J. A. (ed.). "Sequence A051873 (21-gonal numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.