I will take the opportunity to promote Maxima, which is a very nice open source maths tool with a very long history (started in the 60's, and still being developed). It leverages the bignum support in Common Lisp, and has no problems handling numbers like these.

http://maxima.sourceforge.net/

https://wxmaxima-developers.github.io/wxmaxima/

You can use Maxima's built-in command "factor" on this number as well, although I guess you'll have to be very patient.

I obviously also want to promote my own project, which is different UI on top of Maxima:

https://flathub.org/apps/details/com.dhsdevelopments.Climaxi...