I think I know pretty much all there is to know about repeaters.
Are you sure?

Did you know that if the last repeater was a high number, there is more than 50% probability that that the next one will be also high?
Did you know that if a repeater is a high number, the number before the repeat has over 50% probability to be also a high number?
There are many more cases where the statistics are not balanced. But of course it doesn't mean it's possible to exploit these imbalances, because you will
never know when there repeats will happen.