A device designed for computing Euler’s totient operate determines the depend of optimistic integers lower than or equal to a given integer which can be comparatively prime to it (share no frequent components aside from 1). For example, for the enter 10, the device would output 4, as there are 4 numbers (1, 3, 7, and 9) coprime to 10.
This operate, typically denoted as (n), performs a big position in quantity concept, notably in modular arithmetic and cryptography. Its purposes embrace calculating modulo inverses and estimating the safety energy of cryptographic methods. Developed by Leonhard Euler within the 18th century, it varieties a cornerstone of assorted mathematical theorems and ideas.