Thread: Largest prime factor and number of prime factors for a number

Hi guys... i need some help getting the following code to display how many prime factors there are for a number (in this case the number is represented by a) and also the largest prime factor of that same number. At the moment, it displays all of the prime factors. Any help would be great.

Code:

    for(p1 = 1; p1 <= a; p1++)
     {
           for(p2 = (a / 2); p2 > 0; p2--) 
            {
                  if (p1 * p2 == a)
                  {
                         cout << p2 << endl;
                            }
                    }
                    }