[ofcourseianal]

0 0 0

Here, I think you dropped a few zeroes.

[jabl]

The Pulp project claims to have designed a RV32E core in 12 kGE. Which, I believe, implies around 48k transistors with CMOS logic.

[sanxiyn]

Note that original MIPS (1983) was done in 25k transistors.