If you’ve got this far, why don’t just verify them yourself? 
Most likely a hallucination. LLMs don’t have memory in computer storage sense, their “memory” is closer to human. All fingerprints look practically identical, trying to remember one off of the top of your head is practically impossible. Don’t use LLMs for tasks that require perfect precision directly? Is this possible?
Might be nothing lol. I mean it can have tools to do so but there’s no guarantee it will use them
