154 (one hundred ndfifty-four) 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 153 and preceding 155.

In mathematics

154 is a nonagonal number. Its factorization makes 154 a

sphenic number In number theory, a sphenic number (from grc, σφήνα, 'wedge') is a positive integer that is the product of three distinct prime numbers. Because there are infinitely many prime numbers, there are also infinitely many sphenic numbers. Definit ...

There is no integer with exactly 154 coprimes below it, making 154 a

noncototient In mathematics, a noncototient is a positive integer ''n'' that cannot be expressed as the difference between a positive integer ''m'' and the number of coprime integers below it. That is, ''m'' − φ(''m'') = ''n'', where � ...

, nor is there, in base 10, any integer that added up to its own digits yields 154, making 154 a self number 154 is the sum of the first six

factorial In mathematics, the factorial of a non-negative denoted is the product of all positive integers less than or equal The factorial also equals the product of n with the next smaller factorial: \begin n! &= n \times (n-1) \times (n-2) \ ...

s, if one starts with

0!

and assumes that

0!=1

. With just 17 cuts, a pancake can be cut up into 154 pieces (

Lazy caterer's sequence The lazy caterer's sequence, more formally known as the central polygonal numbers, describes the maximum number of pieces of a disk (a pancake or pizza is usually used to describe the situation) that can be made with a given number of straight cu ...

). The distinct prime factors of 154 add up to 20, and so do the ones of 153, hence the two form a Ruth-Aaron pair. 154! + 1 is a factorial prime.

In music

154 Year 154 ( CLIV) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Aurelius and Lateranus (or, less frequently, year 907 ''Ab urbe cond ...

is an album by

Wire Overhead power cabling. The conductor consists of seven strands of steel (centre, high tensile strength), surrounded by four outer layers of aluminium (high conductivity). Sample diameter 40 mm A wire is a flexible strand of metal. Wire is co ...

, named for the number of live gigs Wire had performed at that time

In the military

* was a United States Navy ''Trefoil''-class concrete barge during World War II * was a United States Navy ''Admirable''-class minesweeper during World War II * was a United States Navy ''Wickes''-class destroyer during World War II * was a United States Navy ''General G. O. Squier''-class transport during World War II * was a United States Navy ''Haskell''-class attack transport during World War II * was a United States Navy ''Buckley''-class destroyer escort ship during World War II * Strike Fighter Squadron 154 (VFA-154) is a United States Navy strike fighter squadron stationed at Naval Air Station Lemoore * Convoy ON-154 was a convoy of ships in December 1942 during World War II

In sports

Major League Baseball Major League Baseball (MLB) is a professional baseball organization and the oldest major professional sports league in the world. MLB is composed of 30 total teams, divided equally between the National League (NL) and the American League (A ...

teams played 154 games a season prior to expansion in 1961 * Golfer

Jack Nicklaus Jack William Nicklaus (born January 21, 1940), nicknamed The Golden Bear, is a retired American professional golfer and golf course designer. He is widely considered to be one of the greatest golfers of all time. He won 117 professional tou ...

played in a record 154 consecutive major championships from the 1957 U.S. Open to the 1998 U.S. Open

In transportation

* Seattle Bus Route 154 * The Maserati Tipo 154 racecar, also known as 151/4, was produced in 1965

In other fields

154 is also: * The year AD 154 or 154 BC * 154 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 that corresponds to 770 –

771 __NOTOC__ The year 771 ( DCCLXXI) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. The denomination 771 for this year has been used since the early medieval period, when the Anno Domini calend ...

AD * 154 Bertha is a dark outer

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. ...

Ross 154 Ross 154 (V1216 Sgr) is a star in the southern zodiac constellation of Sagittarius. It has an apparent visual magnitude of 10.44, making it much too faint to be seen with the naked eye. At a minimum, viewing Ross 154 requires a telescope ...

is a

red dwarf ''Red Dwarf'' is a British science fiction comedy franchise created by Rob Grant and Doug Naylor, which primarily consists of a television sitcom that aired on BBC Two between 1988 and 1999, and on Dave since 2009, gaining a cult following. ...

star A star is an astronomical object comprising a luminous spheroid of plasma (physics), plasma held together by its gravity. The List of nearest stars and brown dwarfs, nearest star to Earth is the Sun. Many other stars are visible to the naked ...

near the southern constellation Sagittarius * Psalm 154 *

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 ...

’s 154 sonnets, the last being

Sonnet 154 As the last in the famed collection of sonnets written by English poet and playwright William Shakespeare from 1592 to 1598, Sonnet 154 is most often thought of in a pair with the previous sonnet, number Sonnet 153, 153. As A. L. Rowse states in ...

* Elcapo No. 154, Saskatchewan 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 * 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 an element temporarily called Unpentquadium * In the

United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and ...

, 154 is the telephone number used to report Business Faults with telephone provider BT

References

* Wells, D. '' The Penguin Dictionary of Curious and Interesting Numbers'' London: Penguin Group. (1987): 140 - 141

External links

Virtual Science: Number 154
{{Integers, 1 Integers