It seems like it’d get increasingly impractical as the years go on to hundreds of thousands and millions of years to write them out that way, but then…I guess technically one may already do this with the preceding years, so future’s fair game for it?
It’s how long archeology has said we have had permanent settlements.
In reality it’s likely far earlier than that, we only just found a settlement from 11,000 BCE in Turkey, Gobekli Tepe which was likely a sanctuary/shrine, as well as other towns in the surrounding area likely having started before even then.
Big archeology pushed back to say that that’s not 100% certain and that humans were still nomadic, despite all the evidence showing otherwise. It was finally just recognized officially a couple months ago.