I used some examples for calculating prime numbers up to 50,000 and had a code that worked great (no user input which is what the instructor wanted. But she clarified and said she actually wanted the output to look somethihng like this:

Start End Number of Primes
1 1000 168
1001 2000 135
2001 3000 127
3001 4000 120
4001 5000 119
5001 6000 114
6001 7000 117
7001 8000 107
8001 9000 110
9001 10000 112
…
…
…
49001 50000 98

Total primes in the first 50 chiliads: 5133
Average number per chiliad: 102.66


Okay so I've been working on this and at first I had it outputting primes in one column and zeros in another in an infinite loop untill I nested a while loop in a for loop. Ignoring the bottom 2 lines of output (I'll figure out those later) please look at what I have and help me understand why I get NO output.
Code:
#include <iostream>
#include <iomanip>

using namespace std;
void prime_num(int);//Void to specify no function type.
int primeCount = 0, numCount1 = 0, numCount2 = 0, rangeStart = 1, rangeEnd = 1000;
int main()
{
     int num = 50000;  //Establishing variables
     
     prime_num(num); 
}
 
void prime_num( int num)
{
		bool isPrime = true;
		for ( int num2 = 2; num2 <= num; num2++)
		{
				for ( int num3 = 2; num3 < num2; num3++)//Forloops to create count.
				{
						if ( num2 % num3 == 0 )//if with a mod to test for !prime.
						{
						   isPrime = false;
						   break;//break from if...
						   for(isPrime; numCount1 <  1000 && numCount2 < 50000; numCount1++);
				           {
                           primeCount++;
                           numCount2++;
                           break;
                         
                                while(numCount1 >= 1000)
                                {
                                cout << rangeStart << setw(5) << rangeEnd << setw(5)<< primeCount << endl;//Print the range and the current primeCount for it
                                primeCount = 0;  //Reset primeCount and numCount1
                                numCount1 = 0;
                                rangeStart = rangeStart + 1000;
                                rangeEnd = rangeEnd + 1000;
                                break//break from while to reset the ranges and and first two counts
                                }
                            } 
                         }             
                 }                   
           	            
                         
		isPrime=true;
		}
		system("pause");
}
//

PLEASE HELP I have one more day to reSubmit it.