eolymp 4739

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define test int t; cin>>t; for(int cs=1;cs<=t;cs++)
#define maX 1000008
vector<ll>xx;
bool marked[maX];
void sieve()
{
    marked[0]=1;
    marked[1]=1;
    for(ll i=4; i<=maX; i+=2)
    {
        marked[i]=1;
    }
    for(ll i=3; i<=maX; i+=2)
    {
        if(marked[i]==0)
        {

            for(ll j=i*i; j<=maX; j+=i+i)
            {
                marked[j]=1;
            }
        }
    }
}
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    sieve();
    ll a,c,d,e,i,j;
    cin>>a>>c;
    for(i=a;i<=c;i++)
    {
        if(marked[i]==0)
        {
            cout<<i<<" ";
        }
    }
    cout<<endl;

    return 0;
}