snappy-utils/Utils/isPrime.js

A lightweight and efficient JavaScript utility library packed with commonly used helper functions like capitalize, debounce, deepClone, flattenArray, isPrime, and more. Ideal for developers who want a simple yet powerful toolkit to streamline everyday cod

function isPrime(num) {
    if (num <= 1) return false;
    if (num <= 3) return true;
    
    if (num % 2 === 0 || num % 3 === 0) return false;
  
    for (let i = 5; i * i <= num; i += 6) {
      if (num % i === 0 || num % (i + 2) === 0) return false;
    }
  
    return true;
  }
  
  module.exports = isPrime;