This is wrong.
1024^8 = 1208925819614629174706176
2^80 = 1208925819614629174706176
1208925819614629174706176 = 1 yobibyte
10^24 = 1000000000000000000000000
1000^8 = 1000000000000000000000000
1000000000000000000000000 = 1 Yottabyte
See http://en.wikipedia.org/wiki/Yottabyte
The IEC standards all now refer to Kilobytes, megabytes, gigabytes etc....