prime_division

# File lib/mathn.rb, line 45
  def prime_division
    raise ZeroDivisionError if self == 0
    ps = Prime.new
    value = self
    pv = []
    for prime in ps
      count = 0
      while (value1, mod = value.divmod(prime)
             mod) == 0
        value = value1
        count += 1
      end
      if count != 0
        pv.push [prime, count]
      end
      break if prime * prime  >= value
    end
    if value > 1
      pv.push [value, 1]
    end
    return pv
  end