The inline calculator has two new commands that calculator prime factors. The primefactors command returns a list of NUMBERS which you can access individually. The primefactorstring command creates a string that you can output directly.

{primefactorstring(75)} will produce…

whereas primefactors(75) will give you access to the individual prime factors which can be used in further calculations.

The full description of the commands can be found here:

PrimeFactorString Command
PrimeFactors Command