import java.io.*;

import java.util.*;

import java.math.*;

public class Main {  

    public static void main(String[] args) {

        Scanner in = new Scanner(System.in); 

        BigInteger mod = BigInteger.valueOf(1);  

        while(in.hasNext())

        {

            int k = in.nextInt();

            BigInteger y = in.nextBigInteger();

            BigInteger l = BigInteger.valueOf(1);

            BigInteger r = y;

            BigInteger mid, ans;

            while(l.compareTo(r) == -1){

                mid = (l.add(r)).divide(BigInteger.valueOf(2));

                ans = BigInteger.valueOf(1);

                int temp = k;

                while(temp != 0){

                    ans = ans.multiply(mid);

                    temp = temp - 1;

                }

                if(ans.compareTo(y) == -1) l = mid.add(BigInteger.valueOf(1));

                else r = mid;

            }

            ans = BigInteger.valueOf(1);

            int temp = k;

            while(temp != 0){

                ans = ans.multiply(l);

                temp = temp - 1;

            }

            if(ans.compareTo(y) == 1) l = l.subtract(BigInteger.valueOf(1));

            System.out.println(l);

        }  

    }

}