128-1 = 127, so really in a 127 bit range, because the program subs start range from key or start range is greater than 0.
So I advise everyone to do their own DD and take what ktimes says, with a grain of salt. I believe he is the one who was going to solve #66 with pencil and paper. He’ll always spout this and that, and everyone but him is dumb, but hasn’t provided any insight into anything, other than his owned perceived genius.
I believe you were the one thinking we only need something like 2* 2**33 kangaroos or whatever to solve #130 in something like 2**66 steps... when the reality is we need many exabytes of stored data to have a 50% chance for a collision, in that many steps you mentioned.
And for 130, I am using the average case scenario and numbers. No exabytes needed. And it’s obvious you don’t understand the difference between a kangaroo and a stored DP.
You do the math yourself, take a DP, we will say DP 32, and you tell me, in your expert opinion, how much storage space is needed, roughly, for solving 130.
I would reference you to OPs GitHub to read on time/memory tradeoff but you’ve already stated you don’t agree with much of what he has said or programmed.
Anyway, let me know storage space required, avg run case, for 130, using DP32