40 million, according to the article at the moment. Edit: Thinking it might be because they limited the variable to a specific number of bits, I checked to see

40 million, according to the article at the moment. Edit: Thinking it might be because they limited the variable to a specific number of bits, I checked to see if any maxed out around that number. 25 bits max out at 33,554,431 and 26 bits at 67,108,863.