#include <stdio.h>
int main()
{
	int a,b,c,d,f;
	scanf("%d %d", &a, &b);
	for (c = a; c <= b; c++){
		f = 0;
		for (d = 2; d < c; d++){
			if (c % d == 0){
				f = 1;
				break;
			}
		}
		if (f == 0)
			printf("%d ", c);
	}
	printf("\n");
	return 0;
}