Thank you for merging the new mpn-based factoring code! The code looks good, I did not see anything which needs improvements.
I believe the factoring speedup for numbers of 3 or more limb is quite significant (2x-3x), even when not considering the time saved by not proving primality of found factors. You might want mention that in the header about the 2025 improvements. -- Torbjörn Please encrypt, key id 0xC8601622
