#include <bits/stdc++.h>
#define ll long long
using namespace std;
ll n;
ll exp_log(ll a, ll e,ll mod)
{
    ll rez=1;
    while(e!=0)
    {
        if(e%2==1)
        {
            rez=(rez*a)%mod;
        }
        a=(a*a)%mod;
        e=e/2;
    }
    return rez%mod;
}
ll fi(ll nr)
{
    ll cur = nr;
    for(ll i = 2;i * i <= nr; ++i)
    {
        if (nr % i == 0)
        {
            while(nr % i == 0)nr /= i;
            cur = (cur / i) * (i - 1);
        }
    }
    if (nr != 1) cur = cur / nr * (nr - 1);
    return cur;
}


int main()
{
    ifstream f("inversmodular.in");
    ofstream g("inversmodular.out");
    ll a;
    f>>a>>n;
    g<<exp_log(a,fi(n)-1,n);
    return 0;
}