I would like to learn more about this. Wiki says:
In the 5th century AD, Chinese mathematicians approximated π to seven digits, while Indian mathematicians made a five-digit approximation, both using techniques.
So it looks like they were all approximations, but it actually is much longer like I was always taught.







Oh, I’m sure people are trying to poison them models. Many still crawl and scrape websites and people do put in their own prompts to mess with them.