I'm 14, and have been given a project over the holidays. It's about Euler's phi function and I am completely stuck. I've been struggling through the project and am particulary stuck on two questions.
If we take P as a prime number, obtain an expression for phi(p^3). So far, I know that
I don't know how to obtain an expression. If it helps, phi(p^2)=p(p-1)
I don't even know wehre to get started on phi(p^n) as well.