// 2788.Cifera.cpp : ¶¨Òå¿ØÖÆ̨ӦÓóÌÐòµÄÈë¿Úµã¡£
//

//#include "stdafx.h"
#include<iostream>
using namespace std;


int main()
{
	double k, l, sum;
	int count;
	count = 0;
	cin >> k >> l;
	sum = k;
	while (1)
	{
		if (sum == l)
		{
			cout << "YES" << endl;
			cout << count<<endl;
			break;
		}
		else if (sum > l)
		{
			cout << "NO"<<endl;
			break;
		}
		else
		{
			sum = sum*k;
			count++;
		}

	}
	return 0;
}