Well, http://searchyc.com/pg?sort=by_date_r
has pg's first post (ID = 1) and what I assume is his first comment (ID = 17).
I lurked for a while before participating, maybe you did the same?
Incidentally that makes pg 1000205 / 17 = 59,000 HNyears old -- and that seems about right, I bet the average reader here cares ~10,000x more about what pg writes than what I write (pg HNyears / davi HNyears = ~10K). :)
Or perhaps my memory is going. They say the mind is the first thing to go. Or at least I think they do.