By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6^th prime is 13.
What is the 1001^st prime number?
answer:
  #include
#include
void main()
{
 long int i,j,prime,count=0;
 clrscr();
 for(i=2;i<10000;i++)
 {
  prime=1;
  for(j=2;j<=i/2;j++)
   {
    if(i%j==0)
     {
      prime=0;
     }
   }
   if(prime==1)
   {
    count=count+1;
    if(count==1001)
    {
    printf("%ld is prime\n",i);
    break;
    }
   }
  }
  printf("count is %ld",count);
  getch();
}
answer:7927