en>David Eppstein: {{applied-math-stub}}

2013-12-14T02:03:53Z

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	~~The writer~~ is ~~recognized by~~ the ~~name~~ of ~~Numbers Lint~~. ~~California~~ is ~~our beginning place~~. ~~Body developing~~ is ~~what my family~~ and ~~I appreciate~~. In ~~her professional life she~~ is a ~~payroll clerk but she~~'s ~~always wanted her personal business~~.~~<br><br>Also visit my web site:~~ [~~http://www~~.~~fuguporn~~.com~~/user/RMitchell over~~ the ~~counter std test~~]		{{Unreferenced\|date=December 2009}}
			{{Infobox number
			\| number = 233
			\| prime = yes
			}}
			'''233''' is the [[natural number]] between 232 and 234. It is also a [[prime number]].

			==In mathematics==
			233 is an [[irregular prime]], a [[full reptend prime]], a [[cousin prime]], a [[Chen prime]], a [[Fibonacci prime]] and a [[sexy prime]]. It is the 13th [[Fibonacci number]]. It is an [[Eisenstein prime]] of the form <math>3n - 1</math> with no imaginary part. Since 233 × 2 + 1 = 467, another prime, 233 is a [[Sophie Germain prime]]. 233 is also a [[prime triplet]] (with [[227 (number)\|227]] and [[229 (number)\|229]]).

			It is the 13th [[Fibonacci number]], being the sum of 89 and 144. Being an odd-indexed Fibonacci number, it is also a [[Markov number]], appearing in solutions to the Markov Diophantine equation: (1, 89, 233), (89, 233, 610), (233, 610, 426389), ... It is also the second (non-trivial) Fibonacci number whose digits and digit sum are also Fibonacci numbers.

			In base 10 there is no integer that added up to its own digits yields 233, hence 233 is a [[self number]]. In base 3, the sum of 233's digits is composite; no smaller prime has this property.

			==In other fields==
			In current teenage [[slang]] and Internet discourse, 233 is sometimes used instead of [[Best friends forever\|BFF]] to abbreviate "'''B'''est '''F'''riends '''F'''orever." The digits correspond to the number keys that would be pressed on a telephone while sending a text message. In Windows live messenger 233 is a commonly used to represent the emoticon of raised eybrows.

			The expression "233" is commonly used by Internet users in China to express a meaning similar to that of the Internet discourse [[LOL]]. It originated from the 233rd emoticon from the popular Chinese website mop.com, which portrays a figure laughing while banging on the floor.

			==In literature==
			233 is the final chapter of ''[[The Curious Incident of the Dog in the Night-Time]]'' by [[Mark Haddon]], which uses all [[prime numbers]] for its chapters due to its narrator's [[Asperger syndrome\|Asperger's syndrome]].

			{{Integers\|2}}

			{{DEFAULTSORT:233 (Number)}}
			[[Category:Integers]]

			{{Num-stub}}

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2012-05-11T16:33:46Z

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The writer is recognized by the name of Numbers Lint. California is our beginning place. Body developing is what my family and I appreciate. In her professional life she is a payroll clerk but she's always wanted her personal business.<br><br>Also visit my web site: [http://www.fuguporn.com/user/RMitchell over the counter std test]

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en>David Eppstein: {{applied-math-stub}}

en>Helpful Pixie Bot: ISBNs (Build KG)