What do you think? I think I might be close. I'm guessing $10,000 per bitcoin by then.
If the price will be 10k per Bitcoin then you will become a millionaire but the real question is of the price is going to be 10k per Bitcoin. I suggest that you will earn more Bitcoins if you are serious about becoming millionaire.
If the price of bitcoin rises 40% a year, the price will be 4 times of the present value, or the $2,500. So it is not possible to be a millionaire.