A Retiree Discovers an Elusive Math Proof–and Nobody Notices

I think it's safe to say people have noticed

IMHO, it would have been solved sooner had more people been working on it. I think only 5 or so people had or were working on it?

This exact same story was submitted four days ago and received considerable discussion. You can find that discussion here:

https://news.ycombinator.com/item?id=13977554