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#include<cstdio>
#include<math.h>
using namespace std;
long long n,a;
long long po(long long a,long long b)
{
long sol=1;
for(;b;b>>=1)
{
if(b&1) sol=(sol*a)%n;
a=(a*a)%n;
}
return sol;
}
long long phi(long long a)
{
long long p=a,q=a;
for(long long i=2;i<=sqrt(a);i++)
{
if(q%i==0)
{
p/=i;p=p*(i-1);
while(q%i==0) q/=i;
}
}
if(p!=a) return p; else return p-1;
}
long long inv(long long a,long long n)
{
long long x=phi(n);
x--;
return po(a,x);
}
int main()
{
freopen("inversmodular.in","r",stdin);
freopen("inversmodular.out","w",stdout);
scanf("%lld %lld",&a,&n);
printf("%lld ",inv(a,n));
}