26 lines
937 B
Factor
26 lines
937 B
Factor
! Copyright (C) 2009 Doug Coleman.
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! See http://factorcode.org/license.txt for BSD license.
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USING: help.markup help.syntax kernel ;
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IN: math.primes.lucas-lehmer
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HELP: lucas-lehmer
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{ $values
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{ "p" "a prime number" }
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{ "?" "a boolean" }
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}
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{ $description "Runs the Lucas-Lehmer test on the prime " { $snippet "p" } " and returns " { $link t } " if " { $snippet "(2 ^ p) - 1" } " is prime." }
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{ $examples
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{ $example "! Test that (2 ^ 61) - 1 is prime:"
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"USING: math.primes.lucas-lehmer prettyprint ;"
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"61 lucas-lehmer ."
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"t"
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}
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} ;
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ARTICLE: "math.primes.lucas-lehmer" "Lucas-Lehmer Mersenne Primality test"
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"The " { $vocab-link "math.primes.lucas-lehmer" } " vocabulary tests numbers of the form " { $snippet "(2 ^ p) - 1" } " for primality, where " { $snippet "p" } " is prime." $nl
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"Run the Lucas-Lehmer test:"
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{ $subsection lucas-lehmer } ;
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ABOUT: "math.primes.lucas-lehmer"
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