package main

import (
	"fmt"
)

func power(base, exp, mod int64) int64 {
	var res int64 = 1
	base %= mod
	for exp > 0 {
		if exp%2 == 1 {
			res = (res * base) % mod
		}
		base = (base * base) % mod
		exp /= 2
	}
	return res
}

func main() {
	var n, m int64
	fmt.Scan(&n, &m)
	mod := int64(1000000007)
	a := power(2, m, mod)
	b := (a - 1 + mod) % mod
	fmt.Print(power(b, n, mod))
}