I don't trust facts from LLMs. When I am searching for something, I usually want to find primary sources. As soon as a number is involved, I do my best to not even look at the AI output. Even though the result is often good and combines information from multiple sources, it can also get things wrong by combining information from different eras or just plain outdated advice. AFAICT, without primary sources, the result…
Have you tried explicitly asking for links to primary sources?