Let it keep running. It seems to me that if you find a prime, the test may start over from zero and run much more slowly the second time, like SR5 does. At the moment there are no GCW LLR primes showing up anywhere.

When I mention it taking longer, I'm talking about twice the normal length, not weeks and months. What's the URL or workunit id of this job? I want to see if the other host has reported yet and/or I'll run it here myself if necessary. Don't worry, if it's prime I don't get any credit for it. Click the link on the left of this and PM me the information if you want to.

OK, it seems like you're talking about http://www.primegrid.com/workunit.php?wuid=599762024. There's one result returned already and it's showing as composite. That other computer has no inconclusives or invalids so I tend to believe it. Your progress on that job looks like:

2019-03-04 05:30:17 Updating llrGCW_313146707_4, first trickle, progress 16%, old exp 2019-03-10 01:51:31 changed to 2019-03-11 05:35:17
2019-03-05 05:30:17 Updating llrGCW_313146707_4, last trickle 24h ago, progress 16% to 33%, old exp 2019-03-11 05:35:17 changed to 2019-03-12 05:35:17
2019-03-06 05:30:16 Updating llrGCW_313146707_4, last trickle 23h ago, progress 33% to 50%, old exp 2019-03-12 05:35:17 changed to 2019-03-13 05:35:16
2019-03-07 05:30:16 Updating llrGCW_313146707_4, last trickle 24h ago, progress 50% to 63%, old exp 2019-03-13 05:35:16 changed to 2019-03-14 05:35:16
2019-03-08 05:30:16 Updating llrGCW_313146707_4, last trickle 24h ago, progress 63% to 76%, old exp 2019-03-14 05:35:16 changed to 2019-03-15 05:35:16
2019-03-09 05:31:16 Updating llrGCW_313146707_4, last trickle 24h ago, progress 76% to 93%, old exp 2019-03-15 05:35:16 changed to 2019-03-16 05:36:16
2019-03-10 05:34:16 Updating llrGCW_313146707_4, last trickle 24h ago, progress 93% to 0%, old exp 2019-03-16 05:36:16 unchanged
2019-03-11 05:34:16 Updating llrGCW_313146707_4, last trickle 24h ago, progress 0% to 9%, old exp 2019-03-16 05:36:16 changed to 2019-03-18 05:39:16

Your ETA is inaccurate since your computer thinks it's been running that job since March 3rd. It won't really take 40 days, more like 10 days. Your final deadline is 2019-04-02 at 00:51. I'm running that candidate here now and it does not look like the FFT size was insufficient (which could have triggered a restart). I don't think it's prime so it's up to you whether or not to let it continue. All my faster computers are running SOB, it'll take 22.5 hours total to run that candidate here on four threads.