Well, nullius has done it already and I think no one will ever break that record unless theymos becomes active on posting relevant threads 
I don't think that his record is unbreakable, remember LoyceV on fell short of only 4 days which is really near and LoyceV is also very active in the forum currently and to top it off he is also a merit source which means that there is a high chance that the one he has sent the merits to has a certain influence on returning back the favor. I don't know when but I am sure that nullius' record is nowhere untouchable and someone will break it someday.