First of all, don't do this. No one cares. Secondly obviously every Euler solution is going to appear in the training data many times over. It's no surprise at all that an LLM can regurgitate data that was given to it.
I do care. I appreciate /u/webo's comment. If you're a hater, don't generalize to others. There are still people out there embracing new technologies and change, and with an intact engineering spirit driven by sheer curiosity.
I thought it was interesting, and I wouldn't be surprised if Euler solutions weren't in the training data, especially for the later problems like this one.
I used to do these in college to procrastinate my homework. I always had the most difficulty with the problems that required data structures I wasn't exposed to previously and ended up making really complicated solutions that were inefficient as hell, but fun nonetheless.
I might give them a try with golang now that it's my preferred language. I used to do them in python as that was our intro language.