#include <iostream>

using namespace std;

int a, b;
bool was[1000500];

int main() {

    was[0] = was[1] = true;
    cin >> a >> b;
    for (int i = 2; i <= 1000000; i++) {
        if (was[i] != true) {
            if (i * 1ll * i <= 1000000) {
                for (int j = i * i; j <= b; j += i)
                    was[j] = true;
            }
        }

    }
    int cnt = 0;
    for(int i = a; i <= b; i++){
        if(was[i] == 0){
            cout << i << endl;
            cnt++;
        }
    }
    if(cnt == 0){
        cout << "Absent";
    }

    return 0;

}