JSFiddle - React, Tailwind, and code Playground

by Jessie Lau

JavaScript

function PrimeTime(num) {
    if (num < 2 || num != Math.round(num)) {
        return false;
    }
    for (var i = 2; i <= Math.sqrt(num); i++) {
        if (num % i == 0) {
            return false;
        }
    }
    return true;
}
console.log(PrimeTime(1));
console.log(PrimeTime(110));
console.log(PrimeTime(19));
console.log(PrimeTime(2));
console.log(PrimeTime(200));