Especially impressive, given that 56153 is not prime ...
(you might want to fix the title)
I'm sorry, I had to chuckle at this comment.
Well, you kind of need a number to not be a prime to successfully factor it (into anything other than 1 and itself).
Indeed. So why does the title here (and not on the original article) describe the number as prime, when the whole point is that it is not prime, and cannot be prime.
Hence my comment that the submitter might want to change the title.
Admittedly I was so confused by the title. Factoring a prime number seems, well, kind of easy.