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@jarpiain jarpiain/gist:654521
Created Oct 29, 2010

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Primality testing
(defn prime? [n]
(let [n (int n)
q (int (Math/sqrt (double n)))]
(loop [i 2]
(if (> i q) true
(if (zero? (unchecked-remainder n i)) false
(recur (inc i)))))))
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