There is even a way to find out the range in which the key is located, ...
Really? So tell us what the range is where #66 is lying
Not to be a smart pants, but the question is silly and the answer will follow the question : #66 lies somewhere between 0x20000000000000000 and 0x3ffffffffffffffff .
If you can determine the range of the private key from it's public key, ECC is broken. So, I don't believe that, yet.
Exactly, to determine the range, it mean determine one single bit position and that with the correct math operations can solve any key, so it is hard to believe
Totally agree with GoldTiger69 and albert0bsd here! One single bit position will break ECC!