How do I find all n values for which the equation $\phi (n) = 8$ holds?
9753
How to solve the equation $\phi(n) = k$?
12976
Prove $\displaystyle\lim_{n\to\infty}\phi(n)=\infty$.
108885
Systems of equations with a single number
88662
$n$ divides $\phi(a^n -1)$ where $a, n$ are positive integer.
17178
Order of $\phi(g)$ divides the order of $g$
44354
Total number of solutions of an equation
37012
The number of summands $\phi(n)$
133925
Find All Solutions to System of Congruence
125188
how to prove $m^{\phi(n)}+n^{\phi(m)}\equiv 1 \pmod{mn}$ where m and n are relatively prime?
115258
Find all positive integers $n$ such that $\phi(n)+\sigma(n)=2n$.
58442
Find all the values of $w$ ∈ C that satisfy the equation.
53263
Show $\sum\limits_{d|n}\phi(d) = n$.
60284
Infinitely many positive integers $n$ such that $\phi(n) = \frac{n}{4}$?
2954
Extended Euclidean Algorithm in $GF(2^8)$?
147837
Find the parameter values satisfying conditions for all roots of an equation
123036
Is the equation $x = \phi(n), x=2k, n,k \in \mathbb{Z}$, where $\phi(n)$ is the Euler totient function, solvable for all evens?
94558
Show that $\phi(mn) = \phi(m)\phi(n)\frac{d}{\phi(d)}$