Shane Hathaway wrote: > Given those rules, n bits can express integers from 0 to (2^n - 1). n > is 2^64, so 16 exbibits can express integers from 0 to (2^(2^64) - 1). BTW, if you meant to ask about 16 exbibytes, you can represent up to (2^(2^72) - 1). Shane