#include <fstream>
#include <iostream>
#include <algorithm>
#include <vector>
#include <set>
#include <iomanip>
#include <string>
#include <cmath>

using namespace std;

vector< pair<int,int> > factor(const int& x) {
	vector< pair<int, int> > ret;
	int t = x, c;
	int p = 0;
	while ((t & 1) == 0) {
		t >>= 1;
		p++;
	}
	if (p) ret.push_back({ 2, p });
	for (int d = 3; d * d <= t; d += 2) {
		p = 0;
		while (t > 1 && t - (c = t / d) * d == 0) {
			t = c;
			p++;
		}
		ret.push_back({ d, p });
	}

	if (t > 1) ret.push_back({ t, 1 });
	
	return ret;
}

inline bool check(const long long& val,const vector< pair<int, int> >& factors) {
	for (int i = 0; i < (int)factors.size(); i++) {
		long long d = factors[i].first;
		long long p = 0;
		while (d <= val) {
			p += val / d;
			d *= factors[i].first;
		}

		if (p < factors[i].second) return false;
	}

	return true;
}

int main()
{	
	ifstream cin("gfact.in");
	ofstream cout("gfact.out");
	int p, q;
	cin >> p >> q;
	vector< pair<int, int> > f = factor(p);
	for (auto& x : f) {
		x.second *= q;
	}
	long long left = 1;
	long long right = 1ll << 58;
	while (left <= right) {
		long long mid = left + (right - left) / 2;
		if (check(mid, f)) {
			right = mid - 1;
		} else {
			left = mid + 1;
		}
	}
	cout << left << " ";
	return 0;
}