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Old 2020-07-18, 21:42   #1409
masser
 
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Quote:
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I will reserve the RS16 sequences that are currently at n=750K; my plan is to sieve up to n=2M, but test up to n=1M.
I am un-reserving RS16 now. I have attached the sieve file (I believe it was sieved up to 6e15)
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File Type: gz sr2data.txt.gz (271.3 KB, 72 views)
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Old 2020-08-25, 14:44   #1410
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R31 tested to n=3M (1-3M)

1 prime found, 1 remain

Results emailed - Base released
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Old 2020-09-19, 22:05   #1411
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I know Gary doenst like taking single k´s from larger Bases, but i do have an question about two k´s from S25.

101958*25^n+1 and 207544*25^n+1 have both an very low number of tests; each around 4,5k tests between n=350-1M; with an higher sieve limit even a few hundret less.

I could get those down within a few months / weeks.


But of course my aim is not to bring them up to 1M, only prime counts. If you agree i would take both til i have a prime.
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Old 2020-09-20, 08:55   #1412
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Quote:
Originally Posted by MisterBitcoin View Post
I know Gary doenst like taking single k´s from larger Bases, but i do have an question about two k´s from S25.

101958*25^n+1 and 207544*25^n+1 have both an very low number of tests; each around 4,5k tests between n=350-1M; with an higher sieve limit even a few hundred less.

I could get those down within a few months / weeks.


But of course my aim is not to bring them up to 1M, only prime counts. If you agree i would take both til i have a prime.
There are many bases with 2 k's remaining at n=300K or 400K. Why do you choose to take two k's only out of a base with so many k's remaining?

You say you will search them until you find a prime. What makes you think you would find a prime on them before you get bored with them? It is very likely that would happen. The chances of you finding a prime on them for n=350K-1M are very remote because of how low-weight they are.

I'll tell you what. Run a single test at n=770K (~65% of the n-range). See how long it takes. Multiply that by the number of tests that you have to get the total CPU time. Then divide that by your number of cores that you will be running on it 24 hours a day 7 days a week. Then report that time back here.

If you can honestly say that you will run all the cores that you reported here in the above calculation full time and you can provide a status report once a month I will reserve them for you.

The biggest problem that CRUS has is people reserving way more work than they realize. We've also had people reserve things "until they find a prime" not realizing how remote that chance is and how long the tests begin to take in rapid fashion.
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Old 2020-09-25, 21:11   #1413
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Quote:
Originally Posted by gd_barnes View Post
There are many bases with 2 k's remaining at n=300K or 400K. Why do you choose to take two k's only out of a base with so many k's remaining?

You say you will search them until you find a prime. What makes you think you would find a prime on them before you get bored with them? It is very likely that would happen. The chances of you finding a prime on them for n=350K-1M are very remote because of how low-weight they are.

I'll tell you what. Run a single test at n=770K (~65% of the n-range). See how long it takes. Multiply that by the number of tests that you have to get the total CPU time. Then divide that by your number of cores that you will be running on it 24 hours a day 7 days a week. Then report that time back here.

If you can honestly say that you will run all the cores that you reported here in the above calculation full time and you can provide a status report once a month I will reserve them for you.

The biggest problem that CRUS has is people reserving way more work than they realize. We've also had people reserve things "until they find a prime" not realizing how remote that chance is and how long the tests begin to take in rapid fashion.



I will perform those tests over the weekend and report the results on monday.
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Old 2020-09-29, 17:41   #1414
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Quote:
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I will perform those tests over the weekend and report the results on monday.

A run at n=590K takes around 1050 secs.
A run at around 780K takes around 3500 secs.



That makes around 7,7 months for one of those sequences; if using two servers. However without a deeper sieve file i wont start working on them. A sieve up to P = 1e15 should erase around 500 or 600 canidates.

It is still a lot of work regardless, but i think i can handle it. ^^
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Old 2020-10-04, 17:38   #1415
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Default R6 Update

R6 tested to n = 5.4e6. Residues attached. Testing continues.
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File Type: txt R6_5p3M_res.txt (48.4 KB, 22 views)
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Old 2020-10-24, 09:18   #1416
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Reserving S30 to n=1M (800k-1M) for BOINC
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Old 2020-11-08, 20:27   #1417
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Reserving R25 to n=300k (150-300k) for BOINC --> all available k by sievefile
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Old 2020-11-22, 19:00   #1418
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R25 tested to n=300k (150-300k)

9 primes found, 108 remain

Results emailed - Base released
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Old 2020-11-24, 19:45   #1419
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S30 tested to n=1M (800k-1M)

nothing found, 2 remain

Results emailed - Base released
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