EULER TOTIENT FUNCTION

Can anyone explain why and where we use Euler Totient Function. Please provide a pseudo-code or a code to compute it.

Thanks in advance. :slight_smile:

In number theory, Euler’s totient function (or Euler’s phi function), denoted as φ(n) or ϕ(n), is an arithmetic function that counts the positive integers less than or equal to n that are relatively prime to n. (These integers are sometimes referred to as totatives of n.)

For a detailed tutorial about it check this link.

I hope this helps.

1 Like

problem on ETF

on other plateform

https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1120

1 Like

Thanks for the help.
Can you suggest some problem statements for practice.

Thanks for the help.