What's insane is, even if someone managed to get 100,000 GPUs, you still would need 3.5 Months to go through all the 66 range. Not to mention electricity cost of the 100,000 GPUs. I think this puzzle is still infeasible.
Not quite exact as calculation with 100000 RTX 2070 GPUs it would take 4 days for #66 and 8 days for #67 but I agree it would take around 100000 RTX 2070 or 50000 RTX 3060 GPUs 