Here's another condensation of information I gathered along the way. Please reply in the discussion thread or by PM with any corrections or additions you may have. This version includes a link to the archived version of Will Edgington's mersenne related site, which is the only public location I know of with broad coverage of data for Mersenne number factor data for exponents > 2
32. Unfortunately the zip files there are truncated to 128KB on download and so not usable.
As always, additions, corrections or suggestions are invited by PM to kriesel
Top of reference tree:
https://www.mersenneforum.org/showpo...22&postcount=1