#include <stdio.h>


int main() {
    int n,m;
    //i랑 num인덱스랑 같음
    int num[1000001]={1,1,};
    scanf("%d %d",&n, &m);
    
    for(int i=2; i*i<=m; i++) {
        if(num[i]==0) {
            for(int j=2; i*j<=m; j++) {
                //소수아님
                num[i*j]=1;
            }
        }
    }
    for(int i=n; i<=m; i++) {
        if(!num[i]) printf("%d\n",i);
    }
    return 0;
}

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