A mathematical conundrum, there are many others too..one could say totally useless, but a novelty at the same time...

https://en.wikipedia.org/wiki/Collatz_conjecture

Just like Andrew mentioned here many years ago, why not have a device that continually displays the calculated number of pi to greater and greater precision? It's an apparently irrational number and potentially never ends. We don't know. Perhaps another almost futile exercise, but it's just a bit of fun.

So how far could a small PIC micro would get before it simply runs out of memory space? A novelty, yes. A waste of time, perhaps. It's been done before to far greater numbers than I could ever imagine, very true. So why bother?

"I don't know." would be my honest answer, "Why not?" my defense.

Steve A.