function fn(num){
var arr = [];
arr.push(2);
arr.push(3);
arr.push(5);
arr.push(7);
var t = 0;
for (var i = 3; t < num; i = i + 3) {
for (var j = 0; j < 2; j++) {
t = 2 * (i + j) - 1;
if (t < num && (t % 5 == 0 ? false : t % 7 == 0 ? false : true)) {
arr.push(t);
}
}
}
return arr.join(” “);
}
document.write(fn(1000));