Compare with this:
https://helpx.adobe.com/premiere-pro/system-requirements.html#windows
and this:
https://www.pugetsystems.com/recommended/Recommended-Systems-for-Adobe-Premiere-Pro-143/Hardware-Recommendations
I don't know what kind of GPU you have, or what kind of storage drives/how large/how full they are. These things all make a difference in performance.
For one thing, it does look like you have half the RAM needed to handle 4K media, which is what you are using to edit. Also, if your footage is a screen recording, that means it has a Variable Frame Rate (VFR) which is makes it that much harder to process on export. You should use Shutter Encoder (free download) to transcode it first to something with a Constant Frame Rate and a codec easier for your computer to handle, such as ProRes 422. (Warning: the tradeoff of using editing codecs is that the file sizes are HUGE. You'll need room on your drive to store it.)
Also, you didn't mention: what kind of effects/compositing are you putting on this footage? Depending on how heavy it is, you could really be taxing your RAM to its limit. Unless something truly wrong and unusual is happening, you can be assured that your computer is exporting as fast as it can. So if says it's going to take 17 hours, just know that that's as fast as your computer will be able to handle that job.
I'm sure there are ways you can still get a video out on your system, but you'll need to learn to "work it" and figure out what works best for you... some combination of the following:
1) Transcoding your screen recording ahead of time to a true editing codec (like ProRes)
2) Using "render and replace"
3) Using "smart rendering"
4) Bonus... learning to use proxies may help your editing experience although that doesn't have much to do with the exporting part.
Even with that, with a small amount of RAM, you should expect long render times (but not as long as you're getting now).