public class euleris {
	public static void main (String[] args) {
		long x = 2520;
		while (!division(20,x))
			x++;
		System.out.println(x);
	}
	
	public static boolean division (int from, long what) {
		boolean div = true;
		int x = 2;
		while (x <= from && div) {
			div = what%x == 0;
			x++;
		}
		return div;
	}
}