// how to find prime factors of a number in javascript

function primeFactors(n){

    let arr = [];

    for(let i =2; i<=n;){

      if(n % i === 0){

        arr.push(i);

        n /= i;

        console.log(n);

      }else{

        i++;

      }

    }

    return arr;

}

console.log(primeFactors(147)); // [ 3, 7, 7 ]