This is weird. I just read this and when I was very young, probably around 3 or 4 I started getting nightmares like these. It was when I was really sick I would get them. Mine were not about numbers though it was about string, there would be a smooth piece of string then it would curl up into a ball and start getting really tangled and more tangled and it would be so massive then it would go smooth again and repeat. I probably had the dreams through my childhood, mostly when I was sick. I haven't had one now for a long long time but this post reminded me of them.

Another part of the dream would be I would be holding onto rope and someone would be pulling the rope and I'd keep falling into holes and then be back to being pulled again and then the rope would tangle up into this overwhelming size and shape in my mind. I'd hear voices really loud all talking over each other too everything was really loud and overwhelming. It's really hard to even try and describe the dreams they were so weird but This sounds exactly in the same kind of experience. Just the feeling or total horror and fear in these dreams was horrific.