To verify that if we search, for example, 3 prefixes (hex), we can skip the probability for the space of 2 prefixes '256' when we find an 'abc'. Clearly, in the space of the next 256, the probabilities of finding 'abc' are minimal. That's why my method searches in the most probable zones first and then, if necessary, reduces the percentage in the database to continue exploring without retracing steps, but always focusing on the most probable place.
There are no more probable or less probable ranges. There are no ranges that you can safely skip. I can assure you it is not in the lower half of the range with a 50% chance. The thing you are trying to sell is the same with other probabilities. It is random.
Based on the fact you found some address you cannot have any conclusions about addresses near that private key.
What if you check postfixes instead of prefixes. Is that the same? If it is, that what if you check in different bases instead of 16?
This is just superstition, and sadly for a while this is what is this forum topic is about. This and bad python codes.