#include<iostream>
#include<fstream>
using namespace std;
int cmmdc(int a,int b)
{while(a!=b)
 if(a>b)a-=b;else b-=a;
 return a;
}
int main()
{
 int n,p,i,c=0,d[5000000];
 ifstream f("frac.in");
 ofstream g("frac.out");
 f>>n>>p;
 for(i=1;i<=n;i++)if(cmmdc(n,i)==1){c++;d[c]=i;}
 if(p%c==0)g<<d[c]+(p/c-1)*n;else g<<d[p%c]+(p/c)*n;
return 0;}