using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;
public class Primes {
private long min;
private long max;
public Primes(long minimum, long maximum) {
min = minimum;
max = maximum;
}
public IEnumerator GetEnumerator() {
for (long possiblePrime = min; possiblePrime <= max; possiblePrime++) {
bool isPrime = true;
for (long possibleFactor = 2; possibleFactor <= (long)Math.Floor(Math.Sqrt(possiblePrime)); possibleFactor++) {
long remainderAfterDivision = possiblePrime % possibleFactor;
if (remainderAfterDivision == 0) {
isPrime = false;
break;
}
}
if (isPrime) {
yield return possiblePrime;
}
}
}
}
class Program {
static void Main(string[] args) {
Primes primesFrom2To1000 = new Primes(2, 1000);
foreach (long i in primesFrom2To1000)
Console.Write("{0} ", i);
}
}
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