You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.

factorslib
3.0

This version was deleted from PyPI around 2024-04-23. Installing fails with:
$ pip3 install factorslib==3.0 ERROR: Could not find a version that satisfies the requirement factorslib==3.0
View other deleted versions of factorslib

Install through StableBuild

You can install this package from StableBuild's PyPI snapshots from before the version was deleted:
pip3 install \ -i https://YOUR_API_KEY.pypimirror.stablebuild.com/2024-04-22/ \ factorslib==3.0
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Or, download files manually

And install manually via pip:
factorslib-3.0-py3-none-any.whl (7.1KB)
factorslib-3.0.tar.gz (7.0KB)