import java.util.Scanner;

public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		long n = sc.nextLong();
		long m = sc.nextLong();
		sc.close();

		int mod = 1000000007;
		m %= mod - 1;
		long a = power(2, m, mod) - 1;
		if (a < 0) {
			a += mod;
		}
		a *= 500000004;
		a %= mod;
		System.out.println(a);
	}

	static long power(long x, long n, int m) {
		if (n == 0) {
			return 1;
		}
		long val = power(x, n / 2, m);
		val = val * val % m;
		if (n % 2 == 1) {
			x %= m;
			val = val * x % m;
		}
		return val;
	}
}