...Really, the main problem is that it's just too simple
Surely this can't have not been built already...
...Not that that makes it any better or worse, just -quite likely- previously discovered....
..Bit like the -Lotus- Hash alg i posted, I have no doubt NASA already has something similar[and Better].... But it's just not public.... thereby useless to most people...
While i'm on that, Should give a big shout-out to Bob Gunn, the ex-NASA man who enlightened me on the topic of Factorials, in the context of Cryptography... =)
I built Lotus myself, but none-the-less it would not have happened without him... and many others =D