A number only divisible by itself and one has inspired Joe Mac Anthony to title one of his works

A number only divisible by itself and one has inspired Joe Mac Anthony to title one of his works

A number only divisible by itself and one has inspired Joe Mac Anthony to title one of his works. What was the title of his work?

(a) Prime Target

(b) The Perfect Ten

(c) The Amicable

(d) The Pythagoras

Answer: A