A composite number has exactly two factors.
Fill in the blanks:
(a) A number which has only two factors is called a _______.
(b) A number which has more than two factors is called a _______.
(c) 1 is neither _______ nor _______.
(d) The smallest prime number is _______.
(e) The smallest composite number is _______.
(f) The smallest even number is _______.