26 lines
558 B
Factor
26 lines
558 B
Factor
! Copyright (c) 2007 Aaron Schaefer.
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! See http://factorcode.org/license.txt for BSD license.
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USING: math.primes.factors sequences project-euler.common ;
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IN: project-euler.003
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! http://projecteuler.net/index.php?section=problems&id=3
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! DESCRIPTION
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! -----------
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! The prime factors of 13195 are 5, 7, 13 and 29.
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! What is the largest prime factor of the number 600851475143 ?
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! SOLUTION
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! --------
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: euler003 ( -- answer )
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600851475143 factors supremum ;
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! [ euler003 ] 100 ave-time
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! 1 ms ave run time - 0.49 SD (100 trials)
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SOLUTION: euler003
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