##### Wiktionary

**yobibyte**

n. 2^{80} bytes

##### Wikipedia

**Yobibyte**

The **yobibyte** is a multiple of the unit byte for digital information. It is a member of the set of units with binary prefixes defined by the International Electrotechnical Commission (IEC). Its unit symbol is '''YiB

The prefix yobi (symbol **Yi**) represents multiplication by 1024, therefore:

The prefixes *zebi* and *yobi* were originally not part of the system of binary prefixes, but were added by the IEC in August 2005.