It's a reasonably sized prime number regardless of base.

> reasonably sized prime number

I feel like you're alluding to something but won't say to what? Maybe something like the 'fine-tuned universe' hypothesis?

Actually I’m not alluding to anything specific. I just wondered whether the 17ness of wallpaper groups and fundamental particles was some sort of mapping from a related common object. Obviously a long shot as previously mentioned.