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//0maxmprime12forj+iprime0
 
#include<iostream>
#include<cmath>
#include<cstdio>
using namespace std;
int const maxm=1000001;
int prime[maxm];
void sievePrime()
{
	for(int i=0;i<maxm;i++)
		prime[i]=1;
	prime[0]=0;
	prime[1]=0;
	int max=sqrt(maxm*1.0);
	for(int i=2;i<=max;i++)
	{
		if(prime[i])
		for(int j=i+i;j<maxm;j=j+i)
		{
			prime[j]=0;
		}
	}
}
int main()
{
	sievePrime();
	int i;
	for(i=0;i<100;i++){
		if(prime[i])
		printf("\n%d\n",i);
	}
	return 0;
}