Euler Phi Function of 14

Example of Euler Phi Function of 2 times Odd Prime

$\map \phi {14} = 6$

where $\phi$ denotes the Euler $\phi$ Function.

Proof

We have that:

$14 = 2 \times 7$

Thus:

\(\ds \map \phi {14}\)

\(=\)

\(\ds 7 - 1\)

Euler Phi Function of 2 times Odd Prime

\(\ds \)

\(=\)

\(\ds 6\)

$\blacksquare$