I must agree this is wrong... the reference actually says

"Because of irregularities in the definition and usage of terms for byte multiples, the exact number can be either one of the following:

or 1 septillion 1,000,000,000,000,000,000,000,000 bytes — 1000^8, or 10^24.

1,208,925,819,614,629,174,706,176 bytes — 1024^8, or 2^80.

Because of these irregularities, the term "yobibyte" has been proposed as an unambiguous reference to the latter value. (See binary prefixes.) "

The question was unclear from the beginning, as confirmed by its reference. I want my point! 🙂

Mike