/* package whatever; // don't place package name! */
importjava.util.*;
importjava.lang.*;
importjava.io.*;
/* Name of the class has to be "Main" only if the class is public. */
class y{publicstaticvoid main(String[]b){int n=2,l=870119,i=new java.util.Scanner(System.in).nextInt(),f,j;while(i>0){f=0;for(j=1;j<l;j++)if(n%j==0)f++;if(f==2){System.out.println(n);i--;}n++;}}}