The Euler totient function phi(n) gives the number of integers smaller than n that are relatively prime to n---that is, that share no common factors with n other than 1. For example, phi(12) = 4 because 1, 5, 7, and 11 share no common factors other than 1. If p is a prime number, then phi(p) = p-1 because all numbers smaller than p are relatively prime to p.
Write a function to compute the Euler totient function.
Note: I now realize that Cody Problem 656 also deals with the totient function. Apologies to Freddy.
Solve

Solution Stats

27 Solutions

12 Solvers

Last Solution submitted on May 30, 2026

Last 200 Solutions

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers12

Matt Tearle Chris Cleveland Ramon Villamangca Christian Schröder

Suggested Problems

More from this Author325

Problem Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!