JSFiddle - React, Tailwind, and code Playground

JavaScript

function allRotArePrime(number) {
    var int;
    for (i = 0; i < number.length; ++i) {
        int = parseInt(
            number.substring(i) +
            number.substring(0, i)
        );
        // if (!isPrime(int)) return false;
        console.log(int);
    }
    return true;
}

var num = 1927;
console.log(allRotArePrime(num.toString()));