I think you need to replace it with more than two if you want to achieve 2^64, probably, at least, replace it with "as many as are left + 1" each time, then sta

I think you need to replace it with more than two if you want to achieve 2^64, probably, at least, replace it with "as many as are left + 1" each time, then start with 3 and you'll have a chance :D but you'll run outta cash first I'm afraid xD