Similar problem here, just with number 33.
These thing happen in cycles to me; it's going on for week then it suddenly stops and so on.
Today for example, every time I turn on my cellphone the time is xx:33, 33 appears on car plates, buildings, signs, etc. It is not that' I'm looking for it, or noticing it more because I made my self believe that number follows me, as everybody here would assume. It's like my attention and gaze gets "pulled" in certain direction of that number, even before I'm aware of it being there.
All that wouldn't be so much of a trouble, but every time I lay my gaze on that number, I get a certain feeling of dread. Also, my brain starts convincing me that all of this is being orchestrated by some entity. That is followed by extreme repulsion for reality and state of anxiety that last for couple of days.