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The

**particle number**is a fundamental parameter in thermodynamics which is conjugate to the chemical potential. Unlike most physical quantities ,**particle number**is a dimensionless quantity . It is an extensive parameter , as it is directly proportional to the size of the system under consideration, and thus meaningful only for closed systems .An

**algebraic number**is a**number**that is a root of a non-zero polynomial in one variable with integer (or, equivalently, rational) coefficients. For example, the golden ratio , ( 1 + 5 ) / 2 {\displaystyle (1+{\sqrt {5}})/2} , is an**algebraic number**, because it is a root of the polynomial x 2 − x − 1 .The Beatles' first chart-topper, "From Me to You", reached

**number**one in May 1963. In the 1970s, the required**number**of sales needed to top the chart was roughly 150,000. During 1992, when few releases were reaching**number**one, sales of CD singles were low: songs needed to sell only 60–70,000 each week to remain at the top.This is a list of songs that have peaked at

**number**one on the Billboard Hot 100 and the magazine's national singles charts that preceded it. Introduced in 1958, the Hot 100 is the pre-eminent singles chart in the United States, currently monitoring the most popular singles in terms of popular radio play, single purchases and online streamingIn linguistics, and more precisely in traditional grammar, a

**cardinal numeral**(or cardinal**number**word) is a part of speech used to count. Examples in English are the words one , two , three , and the compounds three hundred and forty-two and nine hundred and sixty .The year began with "Big, Big Plans" by Chris Lane returning to

**number**one on the Country Airplay chart, having previously topped the listing in the issue of Billboard dated December 19, 2020, while "I Hope" by Gabby Barrett held the top spot on Hot Country Songs, the song's 22nd week atop the chart.The

**Number****23**, a 2007 film starring Jim Carrey; Music.**23**, a German rap duo composed of Bushido and Sido; Albums.**23**, 2011, by German rappers Bushido and Sido alias**23**;**23**(Blonde Redhead album), 2007;**23**(Rythem album), the third album from the Japanese duo, Rythem;**23**(Shadow Child EP), 2012, featuring Tymer;**23**(The Silents EP), 2007**65537**is also the 17th Jacobsthal–Lucas**number**, and currently the largest known integer n for which the**number**+ is a probable prime. Applications.**65537**is commonly used as a public exponent in the RSA cryptosystem. Because it is the Fermat**number**F n = 2 2 n + 1 with n = 4, the common shorthand is "F 4" or "F4".