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dmalikov/pr124.hs

Created November 27, 2011 20:42
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Project Euler 124 (0.3 s)
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pr124.hs
import Data.List (nub, sort)
import Data.Numbers.Primes
import Control.Arrow ((&&&))
radical :: Integer -> Integer
radical = product . nub . primeFactors
radicalsSortedBelow :: Integer -> [Integer]
radicalsSortedBelow = map snd . sort . map ((&&&) radical id) . enumFromTo 1
main = print $ radicalsSortedBelow 100000 !! (10000 - 1)
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