This is considering the Phi function (The Euler PhiFunction)
(a) Explain why ?(m) is always even when m ?3.
(b) ?(m) is rarely a prime number. Find all numbers m so that?(m) is prime.
I'm solving for part b. From part a, it looks like there is noprime number for phi of m when it's greater than or equal to 3.Now, I notice that Phi of 4 is 2, Phi of 3 is 2, and Phi of 6 isalso 2. It looks like 2 is prime so does that mean m = 3, 4, 6 areall the numbers m in which Phi of m is prime? Please let me know ifthis is correct or post a solution to what the correct answer is topart b.
