The numbers are taken from an aliquot sequence project I am running and don't necessarily relate to any existing factors in the database.
I was doing 6 attempts with 10 seconds of sleep between them.
I suspect that the numbers which later became FF (including the latest one 72532046707394527184361122364055313434377630022988043070962959961740902025113107530697959132646327596976526693065378307) did so after you accessed them with your HTML-based request. So I'll keep the latest one secret and check if it ever comes good.
I'm pretty sure that if I accessed the database with
Code:
requests.get('http://www.factordb.com/index.php?query=%s' % str(n))
it would return FF immediately.
The question is, who is responsible for the API at factordb.com/api? I think this is where the problem lies.