Portability of Tar Features

We know it's out of date because "This is signalled by setting the MSB of the first octet, and provides for 95-bit integer size, i.e. 32768 YiB (it's so big that we lack a better prefix for it)." ;)

In 2022 ronna- became the recognized prefix for 10^27 and earlier this year robi- became the recognized prefix for 2^90. 32768 YiB is 32RiB.

Jupiter has a mass of 1.9 Rkg.

After that is quetta- for 10^30 and quebi- for 2^100.

The Sun has a mass of 2 Qkg.

Qkg? I hope that's not a thing and that you either mean 2Qg or 2000Qg?

D'oh! Yes, you're absolutely without a doubt correct!

The Sun masses 2000Qg. We're going to need a new unit.