From what I understand, we can arbitrarily choose an exponent e as long as $pgc (e,\phi(n)) =1$$\gcd(e,\phi(n)) =1$. But what is the most appropriate choice for it? Should it be small compared to $\phi(n)$ or approach it?
- But what is the most appropriate choice for it?
- Should it be small compared to $\phi(n)$ or approach it?