# Quick one: \varphi{(p)}- \varphi{(p-1)}= [\varphi{(\varphi{(p)})}]^3

al-mahed
find solutions where a) p is a prime; b) p is composite;

$$\varphi{(p)}- \varphi{(p-1)}= [\varphi{(\varphi{(p)})}]^3$$

ps: it is not homework