var primes = arr.filter(function(x){ var result = true; for(var y =2; y<Math.sqrt(x);y++){ if(parseInt(x/y) == (x/y) ){ result=false; } } return result; })
primes.shift()
return primes;
;
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seven_dong
var primes = arr.filter(function(x){ var result = true; for(var y =2; y<Math.sqrt(x);y++){ if(parseInt(x/y) == (x/y) ){ result=false; } }
return result; })
primes.shift()
return primes;
;