After a night of searching the answer to the question bothering me (and not finding the answer), I can get the answer here ... The issue concerns the address 105 which has outgoing transactions and to which I know the pub (in HEX). How should I convert it to a string consisting ONLY OF NUMBERS .... From these patterns my head is already breaking and the level of knowledge in this direction has not changed. He understands that this is the index value 'x' or 'y', that for these addresses we have only 'y' because it's compressed, etc., but where do the DEC values ​​come from in various Python scripts? Guest gives to try to find a value in the range of 2 ^ 20, giving me the index value 'y' consisting of 155 digits ...
I tried to transform it in a different way and I have no chance to approach this number ... it does not even occur to me what can be converted 33-character hex string being a compressed publickey to give it 155 digits being ... well, ... what other than the index? :-)
I apologize in advance for a vague description, but as I mentioned at the beginning ... the whole night does its job. Greetings!