139 (One hundred ndthirty-nine) is the

natural number In mathematics, the natural numbers are those numbers used for counting (as in "there are ''six'' coins on the table") and ordering (as in "this is the ''third'' largest city in the country"). Numbers used for counting are called '' cardinal ...

following

138 138 may refer to: *138 (number) *138 BC *AD 138 Year 138 ( CXXXVIII) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Niger and Camer ...

and preceding 140.

In mathematics

139 is the 34th

prime number A prime number (or a prime) is a natural number greater than 1 that is not a Product (mathematics), product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number. For example, 5 is prime ...

. It is a

twin prime A twin prime is a prime number that is either 2 less or 2 more than another prime number—for example, either member of the twin prime pair (41, 43). In other words, a twin prime is a prime that has a prime gap of two. Sometimes the term ''twin p ...

with

137 137 may refer to: *137 (number) 137 (one hundred ndthirty-seven) is the natural number following 136 and preceding 138. In mathematics 137 is: * the 33rd prime number; the next is 139, with which it comprises a twin prime, and thus 137 is ...

. Because 141 is a

semiprime In mathematics, a semiprime is a natural number that is the product of exactly two prime numbers. The two primes in the product may equal each other, so the semiprimes include the squares of prime numbers. Because there are infinitely many prime ...

, 139 is a Chen prime. 139 is the smallest prime before a prime gap of length 10. This number is the sum of five consecutive prime numbers ( 19 + 23 + 29 + 31 + 37). It is the smallest

factor Factor, a Latin word meaning "who/which acts", may refer to: Commerce * Factor (agent), a person who acts for, notably a mercantile and colonial agent * Factor (Scotland), a person or firm managing a Scottish estate * Factors of production, suc ...

of 64079 which is the smallest Lucas number with prime index which is not prime. It is also the smallest factor of the first nine terms of the

Euclid–Mullin sequence The Euclid–Mullin sequence is an infinite sequence of distinct prime numbers, in which each element is the least prime factor of one plus the product of all earlier elements. They are named after the ancient Greek mathematician Euclid, because ...

, making it the tenth term. 139 is a

happy number In number theory, a happy number is a number which eventually reaches 1 when replaced by the sum of the square of each digit. For instance, 13 is a happy number because 1^2+3^2=10, and 1^2+0^2=1. On the other hand, 4 is not a happy number because ...

and a strictly non-palindromic number.

In the military

* RUM-139 VL-ASROC is a

United States Navy The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...

ASROC The RUR-5 ASROC (for "Anti-Submarine Rocket") is an all-weather, all sea-conditions anti-submarine missile system. Developed by the United States Navy in the 1950s, it was deployed in the 1960s, updated in the 1990s, and eventually installed ...

anti-submarine missile * was a United States Navy ''Admirable''-class minesweeper during World War II * was a United States Navy ''Haskell''-class attack transport during World War II * was a United States Navy destroyer during World War II * was a United States Navy transport ship during World War I and World War II * was a tanker loaned to the

Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen nationa ...

during World War II, then returned to the United States in 1944 * was a United States Navy cargo ship during World War II * was a United States Navy ''Des Moines''-class

heavy cruiser The heavy cruiser was a type of cruiser, a naval warship designed for long range and high speed, armed generally with naval guns of roughly 203 mm (8 inches) in caliber, whose design parameters were dictated by the Washington Naval T ...

following World War II * was a

''Wickes''-class

destroyer In naval terminology, a destroyer is a fast, manoeuvrable, long-endurance warship intended to escort larger vessels in a fleet, convoy or battle group and defend them against powerful short range attackers. They were originally developed ...

during World War II

In transportation

British Rail Class 139 British Rail Class 139 is the TOPS classification for PPM60 model lightweight railcars built by Parry People Movers, for use on the British rail network. The class were originally built in 2008 for operation on the Stourbridge Town branch line ...

is the TOPS classification assigned to the lightweight railcars by

West Midlands Trains West Midlands Trains (WMT) is a train operating company in the United Kingdom. It operates passenger trains on the West Midlands franchise between London and the English Midlands under two trade names: West Midlands Railway (WMR) (within the ...

on the Stourbridge Town Branch Line * Fiat M139 platform is the next-generation premium rear wheel drive

automobile platform A car platform is a shared set of common design, engineering, and production efforts, as well as major components, over a number of outwardly distinct models and even types of cars, often from different, but somewhat related, marques. It is pra ...

from

Fiat Fiat Automobiles S.p.A. (, , ; originally FIAT, it, Fabbrica Italiana Automobili di Torino, lit=Italian Automobiles Factory of Turin) is an Italian automobile manufacturer, formerly part of Fiat Chrysler Automobiles, and since 2021 a subsidiar ...

London Buses route 139 London Buses route 139 is a Transport for London contracted bus route in London, England. Running between Golders Green and Waterloo station, it is operated by Metroline. Route 139 has a relatively long history at Metroline, however wasn't ...

is a Transport for London contracted bus route in London

In other fields

139 is also: * The year AD 139 or 139 BC * 139 AH is a year in the

Islamic calendar The Hijri calendar ( ar, ٱلتَّقْوِيم ٱلْهِجْرِيّ, translit=al-taqwīm al-hijrī), also known in English as the Muslim calendar and Islamic calendar, is a lunar calendar consisting of 12 lunar months in a year of 354 ...

that corresponds to 756 – 757 CE. *

139 Juewa 139 Juewa is a very large and dark main belt asteroid. It is probably composed of primitive carbonaceous material. It was the first asteroid discovered from China. Juewa was discovered from Beijing by the visiting American astronomer James Cra ...

is a large and dark

main belt The asteroid belt is a torus-shaped region in the Solar System, located roughly between the orbits of the planets Jupiter and Mars. It contains a great many solid, irregularly shaped bodies, of many sizes, but much smaller than planets, called ...

asteroid An asteroid is a minor planet of the inner Solar System. Sizes and shapes of asteroids vary significantly, ranging from 1-meter rocks to a dwarf planet almost 1000 km in diameter; they are rocky, metallic or icy bodies with no atmosphere. ...

discovered in 1874 * The

atomic number The atomic number or nuclear charge number (symbol ''Z'') of a chemical element is the charge number of an atomic nucleus. For ordinary nuclei, this is equal to the proton number (''n''p) or the number of protons found in the nucleus of ever ...

of untriennium, an unsynthesized chemical element * Gull Lake No. 139 is a

rural municipality A rural municipality is a classification of municipality, a type of local government, found in several countries. These include: * Rural municipalities in Canada, a type of municipal status in the Canadian provinces of Manitoba, Saskatchewan, ...

Saskatchewan Saskatchewan ( ; ) is a Provinces and territories of Canada, province in Western Canada, western Canada, bordered on the west by Alberta, on the north by the Northwest Territories, on the east by Manitoba, to the northeast by Nunavut, and on t ...

, Canada * Sonnet 139 by

William Shakespeare William Shakespeare ( 26 April 1564 – 23 April 1616) was an English playwright, poet and actor. He is widely regarded as the greatest writer in the English language and the world's pre-eminent dramatist. He is often called England's nation ...

* 139 Rb Gahhie is a village in

Chak Jhumra Chak Jhumra ( ur, ), is a town, railway junction, and Tehsil in Punjab, Pakistan. The town is situated about Northeast of Faisalabad on Faisalabad-Sangla Hill Road. The Khanewal–Wazirabad Branch and Sangla Hill–Kundian Branch intersec ...

Tehsil A tehsil (, also known as tahsil, taluka, or taluk) is a local unit of administrative division in some countries of South Asia. It is a subdistrict of the area within a district including the designated populated place that serves as its adminis ...

in the

Punjab Punjab (; Punjabi Language, Punjabi: پنجاب ; ਪੰਜਾਬ ; ; also Romanization, romanised as ''Panjāb'' or ''Panj-Āb'') is a geopolitical, cultural, and historical region in South Asia, specifically in the northern part of the I ...

province of

Pakistan Pakistan ( ur, ), officially the Islamic Republic of Pakistan ( ur, , label=none), is a country in South Asia. It is the world's List of countries and dependencies by population, fifth-most populous country, with a population of almost 24 ...

* '' Miss 139'' was a 1921 film starring Diana Allen and Marc McDermott * Motorola C139 model cellphone

References

External links