Wandering thoughts in the shower...

No, not like that.
For some reason I was thinking about scientific notation and the prefaces used.
This probably came from a discussion with a friend awhile back about how some Americans use tenths of feet rather than inches, and kilofeet. Having said that, we use hundreds of feet at work, we also use tens of metres, decametres, in a couple of measurements at work.
Specifically I was wondering which was bigger, 2 Gigainches or 1 nanoParsec.
Go on, work it out, the answer may surprise you. Extra points if you don't need to look up any conversion factors.
Now I need to go out and get a life.