#include <bits/stdc++.h>

using namespace std;

ifstream fin("gfact.in");
ofstream fout("gfact.out");
long long p, q, fact[22], ex[22], nrf;

static inline void Desc(long long n) {
    long long d = 2;
    while(d * d <= n) {
        if(n % d == 0) {
            long long e = 0;
            while(n % d == 0) {
                e++;
                n /= d;
            }

            nrf++;
            fact[nrf] = d;
            ex[nrf] = e;
        }
        d++;
    }
    if(n > 1) {
        nrf++;
        fact[nrf] = n;
        ex[nrf] = 1;
    }
}

static inline long long LaGrande(long long a, long long n) {
    long long put = a;
    long long ex = 0;

    while(put <= n) {
        ex += n / put;
        put *= a;
    }
    return ex;
}

static inline bool Verif(long long n) {
    for(long long i = 1; i <= nrf; i++) {
        if(LaGrande(fact[i], n) < ex[i]) return false;
    }
    return true;
}

int main() {
    fin >> p >> q;

    Desc(p);
    for(long long i = 1; i <= nrf; i++) ex[i] *= q;

    long long st = 1, dr = 20000000000000;
    long long rasp = st;

    while(st <= dr) {
        long long mij = st + (dr - st) / 2;

        if(Verif(mij)) {
            rasp = mij;
            dr = mij - 1;
        }
        else st = mij + 1;
    }
    fout << rasp;

    return 0;
}