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41 (forty-one, XLI) is the natural number following 40 and preceding 42.


In mathematics

* the 13th smallest prime number. The next is 43, making both twin primes. * the sum of the first six prime numbers (2 + 3 + 5 + 7 + 11 + 13). * the 12th supersingular prime * a
Newman–Shanks–Williams prime In mathematics, a Newman–Shanks–Williams prime (NSW prime) is a prime number ''p'' which can be written in the form :S_=\frac. NSW primes were first described by Morris Newman, Daniel Shanks and Hugh C. Williams in 1981 during the study o ...
. * the smallest Sophie Germain prime to start a
Cunningham chain In mathematics, a Cunningham chain is a certain sequence of prime numbers. Cunningham chains are named after mathematician A. J. C. Cunningham. They are also called chains of nearly doubled primes. Definition A Cunningham chain of the first ki ...
of the first kind of three terms, . * an Eisenstein prime, with no imaginary part and real part of the form 3''n'' − 1. * a Proth prime as it is 5 × 23 + 1. * the largest lucky number of Euler: the polynomial yields primes for all the integers ''k'' with . * the sum of two squares, 42 + 52. * the sum of the sum of the divisors of the first 7 positive integers. * the smallest integer whose reciprocal has a 5-digit
repetend A repeating decimal or recurring decimal is decimal representation of a number whose digits are periodic (repeating its values at regular intervals) and the infinitely repeated portion is not zero. It can be shown that a number is rational if an ...
. That is a consequence of the fact that 41 is a factor of 99999. * the smallest integer whose square root has a
continued fraction In mathematics, a continued fraction is an expression obtained through an iterative process of representing a number as the sum of its integer part and the reciprocal of another number, then writing this other number as the sum of its integer ...
with
period Period may refer to: Common uses * Era, a length or span of time * Full stop (or period), a punctuation mark Arts, entertainment, and media * Period (music), a concept in musical composition * Periodic sentence (or rhetorical period), a concept ...
3. * a
centered square number In elementary number theory, a centered square number is a centered figurate number that gives the number of dots in a square with a dot in the center and all other dots surrounding the center dot in successive square layers. That is, each cen ...
. * a prime index prime, as 13 is prime.


In science

* 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 every ...
of
niobium Niobium is a chemical element with chemical symbol Nb (formerly columbium, Cb) and atomic number 41. It is a light grey, crystalline, and ductile transition metal. Pure niobium has a Mohs hardness rating similar to pure titanium, and it has si ...
.


In astronomy

*
Messier object The Messier objects are a set of 110 astronomical objects catalogued by the French astronomer Charles Messier in his ''Catalogue des Nébuleuses et des Amas d'Étoiles'' (''Catalogue of Nebulae and Star Clusters''). Because Messier was only in ...
M41, a
magnitude Magnitude may refer to: Mathematics *Euclidean vector, a quantity defined by both its magnitude and its direction *Magnitude (mathematics), the relative size of an object *Norm (mathematics), a term for the size or length of a vector *Order of ...
5.0
open cluster An open cluster is a type of star cluster made of up to a few thousand stars that were formed from the same giant molecular cloud and have roughly the same age. More than 1,100 open clusters have been discovered within the Milky Way galaxy, and ...
in the constellation
Canis Major Canis Major is a constellation in the southern celestial hemisphere. In the second century, it was included in Ptolemy's 48 constellations, and is counted among the 88 modern constellations. Its name is Latin for "greater dog" in contrast to ...
. * The New General Catalogue object
NGC 41 NGC 41 is a spiral galaxy located in the constellation Pegasus. It is located about 290 million light-years (90 Megaparsec The parsec (symbol: pc) is a unit of length used to measure the large distances to astronomical objects outside the S ...
, a
spiral galaxy Spiral galaxies form a class of galaxy originally described by Edwin Hubble in his 1936 work ''The Realm of the Nebulae''constellation
Pegasus Pegasus ( grc-gre, Πήγασος, Pḗgasos; la, Pegasus, Pegasos) is one of the best known creatures in Greek mythology. He is a winged divine stallion usually depicted as pure white in color. He was sired by Poseidon, in his role as hor ...
.


In music

* " #41", a song by
Dave Matthews Band Dave Matthews Band (also known by the initials DMB) is an American rock band formed in Charlottesville, Virginia, in 1991. The band's founding members were singer-songwriter and guitarist Dave Matthews, bassist Stefan Lessard, drummer and back ...
. * " American Skin (41 Shots)" is a song by Bruce Springsteen about an immigrant murder victim who was shot at 41 times by the NYPD.


In film

* The name of an independent documentary about Nicholas O'Neill, the youngest victim of the
Station nightclub fire The Station nightclub fire occurred on the evening of February 20, 2003, in West Warwick, Rhode Island, United States, killing 100 people and injuring 230. The fire was caused by pyrotechnics set off by the tour manager of the evening's headlini ...
. * 2012 documentary on the life of the 41st President of the United States George H. W. Bush.


In other fields

* The international direct dialing (IDD) code for Switzerland. * Bush 41, George H. W. Bush, the 41st President of the United States. * In Mexico "cuarenta y uno" (41) is slang referring to a
homosexual Homosexuality is romantic attraction, sexual attraction, or sexual behavior between members of the same sex or gender. As a sexual orientation, homosexuality is "an enduring pattern of emotional, romantic, and/or sexual attractions" to p ...
. This is due to the 1901 arrest of 41 homosexuals at a hotel in Mexico City during the government of Porfirio Díaz (1876–1911). See: Dance of the Forty-One * Number of ballistic missile submarines of the ''George Washington'' class and its successors, collectively known as the "
41 for Freedom 41 for Freedom refers to the US Navy Fleet Ballistic Missile (FBM) submarines from the , , , , and es. All of these submarines were commissioned 1959–1967, as the goal was to create a credible, survivable sea-based deterrent as quickly as pos ...
". * The 41st season of CBS's reality program '' Survivor'' is simply subtitled ''
Survivor 41 ''Survivor 41'' is the forty-first season of the American competition television series '' Survivor''. The season was first broadcast on September 22, 2021, on CBS in the United States and Global in Canada. It ended on December 15, 2021, when E ...
''. *A slang term for a transsexual person, or for suicide, due to a study purportedly claiming that 41% of transsexuals have attempted to commit suicide.


See also

* List of highways numbered 41


References

{{DEFAULTSORT:41 (Number) Integers