If my math is right then we have 2*(51!) ~ 3*10^66 combinations
~
I believe that people are not going to waste their time for 0.002B. If someone has a system that reduces the combinations (I doubt it) then maybe they will try it but it is a lot of effort for so little reward.
The thing with all this is that you need to go through all this AND trust that:
- the letters and numbers are indeed real and the author hasn't also changed a few of them for trolling
- the author won't move the coins tomorrow or in the next hours, making all your effort a waste
Doing this for 100$ based on a post created by a newbie?
Who is going to be tying this will do it out of boredom rather than for the reward