#include<iostream>

using namespace std;

int main()
{
 int a, b, i, ok, d;
 cin>>a>>b;
 for(i=a;i<=b;i++)
 {
    ok=1;
    if(i==0 || i==1) ok=0;     
    else for(d=2;d<=i/2;d++)
           if(i%d==0) ok=0;
    if(ok) cout<<i<<" ";       
 }   
 system("pause");
 return 0;
}