// tim so nguyen to trong khoang cho truoc
#include<stdio.h>
main(){
	int num1,num2,i,count=0,j;
	scanf("%d %d",&num1,&num2);
	for(i=num1;i<=num2;i++){
		count=0;
		for(j=1;j<=i;j++){
			if(i%j==0){
				count++;
			}
		}
		if(count==2) printf("%d ",i);
	}
	return 0;
}