function* primes() {
	let p=2;
	while (true) {
		let d=1;
		while (d<p) {
			d++;
			if (p%2!=0) {
				yield p;
				d=1;
				p++;
			}
		}
		yield p;
		d=2;
		p++;
	}
}
let i=0;
for (let prime of primes()) {
	console.log(`[${i}] ${prime}`);
	i++;
	if (i>=10) break;
}