#include<iostream>
#include<iomanip>
#include<cmath>
#include<algorithm>
using namespace std;
long n,m,c=1e15,d;
double N,M;
double mypow(double a,long b)
{
	if(b==0)return 1;
	else
	{
		while(a>=10)d+=b,a/=10;
		double ret=mypow(a*a,b/2)*(b%2?a:1);
		while(ret>=10)d++,ret/=10;
		while(ret<1)d--,ret*=10;
		return ret;
	}
}
main()
{
	cin>>n>>m;N=n,M=m;
	for(long i=2;i*i<=m;i++)
	{
		if(m%i==0)
		{
			long cnt=0,a=n/i;
			while(m%i==0)m/=i,cnt++;
			for(long j=i;~-n/j+1>=i;a+=n/j)j*=i;
			c=min(c,a/cnt);
		}
	}
	if(m>1)
	{
		long a=n/m;
		for(long j=m;~-n/j+1>=m;a+=n/j)j*=m;
		c=min(c,a);
	}
	N++;
	double ori=(N+1/(12*N-1/(10*N)))/M_E;
	double f=sqrtl(2*M_PI/N)*mypow(ori,N);
	for(long i=0;i<c;i++)
	{
		f/=M;
		while(f<1)d--,f*=10;
	}
	while(f>=10)d++,f/=10;
	cout<<fixed<<setprecision(15)<<f<<"e"<<d<<endl;
}