/*
#include <bits/stdc++.h>
using namespace std;
int main(){
    int a,b,t=0,c=0;
    cin>>a>>b;
    int l[b-a]={0},l1[b-a]={0};
    for(int i=a;i<=b;i++){
        if(i%2){
            if(i%3){
                if(i%5)
                    if(i%7)
                    {
                    for(int k=2;k<i;k++)
                        if(i%k==0){t++;continue;}
                    if(t==0) l[c]=i;
                    }
                else continue;
            }else continue;
        }else continue;
        c++;
    }
    for(int i=0;i<b-a;i++)
    {
        t=l[i]%10;
        t*=10;
        l1[i]=l[i]/10+t;
    }
    t=0;
    for(int i=0;i<=b-a;i++){
        if(l1[i]%2){
            if(l1[i]%3){
                if(l1[i]%5)
                    if(l1[i]%7)
                    {
                    for(int k=2;k<l1[i];k++)
                        if(l1[i]%k==0){t++;continue;}
                    if(t==0) cout<<l[i]<<" ";
                    }
                else continue;
            }else continue;
        }else continue;
    }
	return 0;
}
*/
#include <bits/stdc++.h>
using namespace std;
int main(){
    int a,b;
    int l[9]={11,13,17,31,37,71,73,79,97};
    cin>>a>>b;
    for(int i=0;i<9;i++)if(a<=l[i]&&b>=l[i])cout<<l[i]<<" ";
	return 0;
}