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-   -   Sierp base 3 - mini-drive Ia (https://www.mersenneforum.org/showthread.php?t=10506)

 henryzz 2008-07-31 14:51

1 Attachment(s)
36K-37K Range Complete 2 primes found

 em99010pepe 2008-07-31 16:37

To the sievers, primes found so far:

[quote]
19947516 44420
10504636 46184
24725744 46211
15396762 46233
8828234 46265
[/quote]

 michaf 2008-07-31 17:42

I think I can use some help...
I only have one core free to chime in.

I opt for the file on friday, and then distribute the load between us (or more people) to get to concluding the drive sooner.

[quote=gd_barnes;138631]Well, I goofed. I accidently deleted my n=50K-100K file that was sieved to P=100G. Fortunately I have a backup file but unfortunately it is only sieved to P=20G. I'm in the middle of sieving it to P=60G on 2 cores and will be done with that on Friday.

I could send you the file sieved to P=20G now and it would only take a little bit longer to sieve for P>60G. Or I could send you a file sieved to P=60G on Friday. Let me know which you'd prefer.

My estimate of the optimum sieve depth for breaking off n=50K-75K would be around P=150-175G but it could be lower...around P=120-130G.

The optimum is not going to come in much higher than the optimum for n=25K-50K (P=100G) because there are going to be many less k's remaining.

Do you want to sieve from P=60G to P=~150G-175G yourself or do you need help?

I assume you know to use srsieve for sieving. If you use more than one core, be sure and use the -f switch for all instances so that it will write out factors for all of them for later removal.

Gary[/quote]

 gd_barnes 2008-07-31 20:02

[quote=michaf;138645]I think I can use some help...
I only have one core free to chime in.

I opt for the file on friday, and then distribute the load between us (or more people) to get to concluding the drive sooner.[/quote]

OK, I'll send you the file sieved to P=60G on Friday. My 2 cores are kind of slow; 32-bit operating system; but still sufficient for this small effort.

If you want to sieve P=60G-100G, I'll sieve P=100G-150G or whatever optimal turns out to be. If it needs to be sieved further, we can coordinate at that point.

I can sieve P=~20G per day so my 50G range would take 2-3 days, which would put it done to P=150G sometime on Monday.

Gary

 gd_barnes 2008-07-31 20:06

[quote=em99010pepe;138642]To the sievers, primes found so far:[/quote]

Carlos,

Thanks for helping and posting some primes now.

Micha,

Whatever k's Carlos finds primes for, I'll remove from the sieve file before sending to you on Friday. He said it'd be ~24 hours to complete his range so that timing would work out well.

Gary

 em99010pepe 2008-07-31 20:08

Gary,

Here's another one: 30237632 44437
ETA is 32 hours...I think by tomorrow at this time all ranges will be completed.

Carlos

 gd_barnes 2008-07-31 20:22

[quote=em99010pepe;138654]Gary,

Here's another one: 30237632 44437
ETA is 32 hours...I think by tomorrow at this time all ranges will be completed.

Carlos[/quote]

Great. My sieving to P=60G should complete by this time tomorrow plus ~2 hours, i.e. ~26 hours from now. So we'll have a nice efficient file to sieve for P>60G.

 em99010pepe 2008-08-01 15:02

12203572 42792
14892316 42972
23862908 42999
29772794 43415
40677134 43415
37158138 45035
37160146 45496
38804354 45875
5574644 46587
48501008 46896
12087826 47344
15895156 47532
48563402 47888
35164256 47916
41443828 49528
24763868 49675
6123394 49821

 em99010pepe 2008-08-01 17:17

42-44 done.

 em99010pepe 2008-08-01 19:56

44-46 done.

48-50 done

 em99010pepe 2008-08-01 20:30

Gary,

46-48 is still in progress, less than 100 tests but I won't be here at home in the next 4 hours to post the results. I hope you don't mind.

Carlos

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