Numbers n whose Euler Phi value Divides n + 1/Mistake

Source Work

 * $\mathbf B$: Divisibility
 * $\mathbf {B 37}$: Does $\map \phi n$ properly divide $n - 1$?
 * $\mathbf {B 37}$: Does $\map \phi n$ properly divide $n - 1$?


 * $\mathbf B$: Divisibility
 * $\mathbf {B 37}$: Does $\map \phi n$ properly divide $n - 1$?
 * $\mathbf {B 37}$: Does $\map \phi n$ properly divide $n - 1$?