Long calc time (~4s) due to Subfactorial

[Aras14HD]

Description

Comments containing !238383 or on similar size take very long to calculate.

We should probably lower our upper_subfactorial_limit to at most 100_000. This is a simple config change (just .env), but we could also change the recommended limit.

[tolik518]

Good point, I've set UPPER_SUBFACTORIAL_LIMIT=100000 in the .env