I believe these are signs from the Gods, personally. But, I am not sure.
I've also seen a set of numbers repeatedly for years, now (even waking up in the middle of the night and seeing them on the clock). Sometimes, I'll hear people speak the numbers, such as on the radio. And often, I'll see or hear the numbers at the same time as some other omen or coincidence.
Do you actually feel anything negative from them? Personally, I don't, but I don't know about you. Perhaps the enemy can use them negatively, but I don't think it's necessarily so.
I will let a more experienced member explain, because I am also curious, to be honest.