prime numbers refactor duke

gistfile1.txt

require 'prime'

def prime_factors(number, output = [])
  return [number] if number.prime?
  # write def prime base case checker in method
  # return output if number.prime?

  factors = (2...number/2).to_a.select do |potential_factor|
     number % potential_factor == 0
  end

  output = prime_factors(number/factors[0],output) << factors[0]
end

def factors

p prime_factors(8)

p prime_factors(18)

# tag pull request of duke ruby racer