On Tue, 5 Jan 2021 at 14:07, Beartooth <Beartooth@comcast.net> wrote:

        Having begun life as a mathematician (BA 1961), I still sometimes
play with numbers, whether or not I'm near a computer. I mostly start by
factoring them, so that I know  what I've got. But I get lost juggling
more than about two or three three-digit numbers.

        It would be nice to have a factoring applet -- which wouldn't
need to be vast nor intense enough to come anywhere near cryptographic
use, but just as a mildly entertaining time waster.

        My guess is that it exists, and is either already in Fedora, or
can be handily installed. Anybody know?

I'd suggest one of the general-purpose packages like sympy (symbolic manipulation with
Python), macsyma, sagemath, or octave (matlab "clone").   You may find other 
interesting ways to spend time with any of these.

--
George N. White III