[lproven]

Er, no. In English, it does not mean anything at all.

"Prime" is the analagous English word, I would think, and it is not a superlative. One would not say "that's prime" of something good, impressive, whatever.

"Prime" means: ready; in the thing's initial state; available for immediate use.

It also has a meaning in maths, but that's not really relevant.

[creamyhorror]

"Primo" is US slang for first-rate: https://www.collinsdictionary.com/dictionary/english/primo

[agustif]

In spanish it's cousin