You can go ahead and test 10K-25K or however far you wish. I honestly want no more part in that base

Comparing k's remaining w/VBCurtis
 

Just to check if we have the same 59 k's remaining:
9, 32, 42, 99, 128, 156, 171, 207, 216, 261, 275, 317, 345, 419, 428, 429, 471, 473, 519, 563, 582, 657, 687, 704, 776, 786, 788, 872, 941, 1023, 1035, 1059, 1080, 1113, 1241, 1244, 1296, 1344, 1394, 1458, 1493, 1550, 1607, 1614, 1646, 1677, 1679, 1710, 1773, 1947, 1958, 1968, 1973, 1989, 2102, 2109, 2114, 2144, 2210
K's that can be reduced by algebraic factors (if available):
k=9 (0 mod 2)
k=128 (0 mod 7)
k=216 (0 mod 3)
k=1296 (0 mod 2, 0 mod 4)

Yup! Here's how I generated my list:
srfile your sieve file into srsieve.out format
grep for "-" in the file, which pulls the k*2020^n-1 headers
Remove the 3 k's with primes
Feed that as input to srsieve to generate a new sieve file

If anyone else would like to take R2020 for a spin, please let me know- I'll be happy to share the sieve file so we get further than we did in 2018 or 2019. I'll sieve overnight to 1e11 or so, and will start testing in the morning.

I think base 2019 and 2017 were the most thoroughly searched of the "year" bases. Lalera did his hard work on getting the Riesel side of 2019 to n=200K (!) and the Sierp side, if not already tested by Pepi, has at least been searched by myself to n=15K (6 k's remaining on this), while in 2017 we had to deal with two very high CK's in which testing to n=10K or n=25K is the CPU time equivalent of lalera's R2019 effort. Of course, once we get base 2020 searched up to n=20K or higher that will change

[QUOTE=VBCurtis;533882]Yup! Here's how I generated my list:
srfile your sieve file into srsieve.out format
grep for "-" in the file, which pulls the k*2020^n-1 headers
Remove the 3 k's with primes
Feed that as input to srsieve to generate a new sieve file

If anyone else would like to take R2020 for a spin, please let me know- I'll be happy to share the sieve file so we get further than we did in 2018 or 2019. I'll sieve overnight to 1e11 or so, and will start testing in the morning.[/QUOTE]

Use the -d option with srfile to remove sequences.

I dunno if I'll get R2020 to 200k, wow!

I sieved to 140e9 overnight, now testing a couple of 2000-n ranges on a few cores. How far I go depends a bit on how many primes I find- for instance, if I'm below 50 k's by n=20000, I'll have a feeling that I can make useful progress in going to, say, 100k.
A short-term goal is to match/keep up with what NHoodMath does on S2020.

[QUOTE=NHoodMath;533880]Just to check if we have the same 59 k's remaining:
9, 32, 42, 99, 128, 156, 171, 207, 216, 261, 275, 317, 345, 419, 428, 429, 471, 473, 519, 563, 582, 657, 687, 704, 776, 786, 788, 872, 941, 1023, 1035, 1059, 1080, 1113, 1241, 1244, 1296, 1344, 1394, 1458, 1493, 1550, 1607, 1614, 1646, 1677, 1679, 1710, 1773, 1947, 1958, 1968, 1973, 1989, 2102, 2109, 2114, 2144, 2210
K's that can be reduced by algebraic factors (if available):
k=9 (0 mod 2)
k=128 (0 mod 7)
k=216 (0 mod 3)
k=1296 (0 mod 2, 0 mod 4)[/QUOTE]

Also k=32 (0 mod 5)

R2020 primes from 10k to 15k:
2114 10240
345 10439
171 10726
2210 12141
1113 12404
2102 12768
32 12982
1989 13297
275 13989
704 14052
32 14224

11 primes for 10 k's. 49 k's left! Work continues. I have a file sieved to 260G; if anyone would like to do a 2000-n range for a day or two, please let me know!

R2020 primes for 15k to 20k:
99 15938
1344 17618

47 k's remain. Work is complete to 20k, and continues to 30k; should take 3 days.

next PRP
411*2020^14877+1
tested to 17.8K, 17 k's remain. I expect this to be done within the week

R2020 is complete to 30k.
Primes since 20k:
1607 20812
657 24848
1614 26578
1607 26836
1677 29619
1947 29789

6 primes for 5 k's. 42 k's remain.

Work continues: the next sieve is at 2.5T, while 3 cores LLR in the 30-40k range.
Anyone is welcome to test a particular k, or a range of n-values from my sieve. Please?