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CharlesAMoss/fun with primes

Created June 24, 2016 21:11
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fun with primes
const isPrime = N => {
return (N > 1) && Array.apply(0, Array(1 + ~~Math.sqrt(N))).
every((x, y) => (y < 2) || (N % y !== 0));
}
const primeTime = N => ([...Array(N).keys()].filter(isPrime));
primeTime(10);
// output [2,3,5,7]
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