#include <fstream>
using namespace std;

ifstream f("gfact.in");
ofstream g("gfact.out");

int putere (int x, int p){
    int s=0;
    while(x!=0){
        s=s+x/p;
        x=x/p;
    }
    return s;
}
int main()
{
    int q,p,i=0,pas=1<<30;
    f>>p>>q;
    while(pas!=0){
        if(putere(i+pas,p)<q)
            i+=pas;
        pas/=2;
    }
    g<<i+1;
    return 0;
}