#include <iostream>
using namespace std;
int main()
{ int m,n,i,j,bj;
cin>>m>>n;
if (m==1) m=2;
for (i=m;i<=n;i++)
{ bj=0;
for(j=2;j<=i-1;j++)
if (i%j==0) {bj=1;break;}
if (bj==0) cout<<i<<" ";
}
return 0;
}