import java.util.*;
import java.io.*;
import java.math.*;

public class P2 {
	static boolean[] prime;
	
	public static void main(String args[]) throws IOException
	{
		Scanner sc=new Scanner(new FileReader("DATA2.txt"));
		PrintWriter pw=new PrintWriter(new FileWriter("OUT2.txt"));
		
		int len=150000
;
		generatePrimes(len);
		
		
		for(int LL=0;LL<5;LL++)
		{
			int input=sc.nextInt();
			pw.println(getSum(input));

			
			pw.flush();
		}
		
		sc.close();
		pw.close();
	}
	
	public static void generatePrimes(int len)
	{
		prime=new boolean[len];

		Arrays.fill(prime, true);
		prime[0]=false;
		prime[1]=false;
		for(int i=2;i<Math.sqrt(len);i++)
		{
			if(prime[i])
				for(int j=i*i;j<len;j+=i)
				{
					prime[j]=false;
				}
		}
	}
	
	public static int getSum(int len)
	{
		int sum=0;
		for(int i=2;i<=len;i++)
		{
		
			if(prime[i])
			{
				sum+=i;
			}
		}
		return sum;
	}
	
}