I think you misunderstood my point, if I was able to know the second character easily ecc would be broken.
just my script takes
pk1=20540573305730573
and convert it for example to
pk2= 3305730573
to know the first digits you would need to know pk2.
all this without the need to save millions of results.
my problem is that my computer basically runs out of power to reduce more. due to stress and hangs
I think everyone misunderstands what you are talking about because you have not given a clear and concise definition of what you are doing/talking about.
It would even be better if you can show an example. Not of your code, but an example of how your code works.
Example:
I start with private key x or public key b and do this
Then I do this
Next I do this
etc.