#include <iostream>
#include <fstream>
using namespace std;

struct desc
{
    int factor,putere;
};
desc a[100];
int y=1;

long long putere(long long n, int p)
{
    //returneaza puterea la care apare p in descompunerea lui n!
    long long nr=0;
    while (n >= p)
    {
        nr += n/p;
        n /= p;
    }
    return nr;
}

bool sepoate(long long n)
{
    for (int i = 1; i <= y; i++)
        if (putere(n, a[i].factor) < a[i].putere)
            return false;
    return true;
}
int main()
{
    ifstream in("gfact.in");
    ofstream out("gfact.out");
    long long m, pas;
    int p,q,b,d=2;
    in>>p>>q;
    b=p;
    while(b>1)
    {
        a[y].putere=0;
        while(b%d==0)
        {
            a[y].putere++;
            b=b/d;
        }
        if(a[y].putere!=0)
        {
            a[y].putere=a[y].putere*q;
            a[y].factor=d;
            y++;
        }
        d=d+1;
    }
    y--;
    m = 0;
    pas = 1LL << 40;
    while (pas != 0)
    {
        if (!sepoate(m + pas))
            m += pas;
        pas /= 2;
    }
    ++m;
    out<<m;

    return 0;
}