Rick Prime

While posting in the other thread, I started thinking about a topic I'm not sure if we've discussed before.

If the Rick we see each week C-137, than who is the Prime Rick? There has to be a C-1 or A-1.

Is it the original Rick that developed portal technology, because as we've seen, Ricks don't always develop it himself, he is given it. (Though this may have been a lie, as that whole scenario may have been made up.)

So will we see a Rick Prime, or have we already seen him? Is the Rick Prime even alive? Lots of Ricks die on this show. I think it would make for an interesting season plot.