yogun emin

#include <bits/stdc++.h>
using namespace std;
int f(int n,int k)
{
  int sum = 0;
  while (n > 0)
  {
    sum += n / k;
    n /= k;
  }
  return sum;
}
int main()
{
  int minn = 1e9;
  int n,k;
  cin >> n >> k;
  for(int i = 2; i * i <= k ; i ++)
  {
    if(k % i == 0)
    {
      int cnt = 0;
      while(k % i == 0)
      {
        k /= i;
        cnt ++;
      }
      minn = min(minn,f(n, i) / cnt );
    }
  }
  if(k > 1)
  {
    cout << min (minn, f(n,k)) << endl;
    return 0;
  }
  cout << minn << endl;
  return 0;
}