KataPrimeFactorsJS-1 practice for Prime Factor from cyber-dojo.org Factorize a positive integer number into its prime factors. For example: 2 -> [2] 3 -> [3] 4 -> [2,2] 6 -> [2,3] 9 -> [3,3] 12 -> [2,2,3] 15 -> [3,5]