The integer m (not to be confused with the moment, m ) is called the magnetic quantum number or the equatorial quantum number, which can take on any of 2 j + 1 values: − − j , − − ( j − − 1 ) , ⋯ ⋯ , − − 1 , 0 , + 1 , ⋯ ⋯ , + ( j − − 1 ) , + j .