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-   -   Sierpinski base 4 (https://www.mersenneforum.org/showthread.php?t=3630)

jasong 2007-06-10 20:41

[QUOTE=tcadigan;108042]as before...I'm interested in the file. same addy as before too please, thanks for the contributions![/QUOTE]
Yeah, I think the first file I sent you, about 2-3 weeks back, was "broken."

I'll send the file tonight or tomorrow.

Jean Penné 2007-06-24 14:57

Progress on k = 23451 and k = 60849 LLR tests
 
Hi,

to-day, k = 23451 is up to n = 1,807,892 base 2, no prime, continuing...

and k = 60849 is up to n = 1,700,346 base 2, no prime, continuing...

I think than when exponents 2,000,000 reached, it will be time to split the LLR
testing work between several users...

Regards,
Jean

jasong 2007-06-25 06:34

Hey, tcadigan, are you sieving this file. If so, where are you at?

If I don't get a response by Wednesday night(I'm in -5GMT time zone) I'm going to go ahead and go from 2,000G.

tcadigan 2007-06-26 06:52

[QUOTE=jasong;108890]Hey, tcadigan, are you sieving this file. If so, where are you at?

If I don't get a response by Wednesday night(I'm in -5GMT time zone) I'm going to go ahead and go from 2,000G.[/QUOTE]

I haven't touched it, I merely put it into a format that I'm familiar with. I also seem to have become a collector of sorts for the effort put into this project. there isn't much to keep track of so it's pretty easy. I also haven't been able to LLR recently. various hardware failures have prevented me from doing so. I hope to be able to resume soon.

I agree with Jean that once we reach 2 mil LLR will have to be split up.

jasong 2007-06-26 23:32

reserving 2,000G-3,000G

jasong 2007-10-03 00:24

[QUOTE=jasong;109068]reserving 2,000G-3,000G[/QUOTE]
When this thread was transferred to the Open Projects Forum, I decided to check what was going on since I'd left. That's when I discovered by forgotten reservation.

Since I have no idea what happened to the original file, I'm going to take what I have here, which is only at 5G, and jump in. I'll post where I intend to go up to after I find out the speed of sr2sieve iwth this file.

reserving 5-2500(will take about a week on two cores of my quad-core, my 2.4GHz quad-core e6600 sieves at about 2.1M p a second on each core)

Edit 2: I've stopped sieving because nothing is being found past 6G which, considering how fast the factors were coming up to that point, probably indicates a bug of some sort.

Edit3: And downloading the most recent update doesn't help a bit. I'm going to move on to another project for the time being.

Jean Penné 2007-10-03 07:39

I hope this project is still continuing!
 
I am continuing to LLR k=23451 and k=60849 up to n=2,000,000 base two :

To-day, k=23451 is up to n=1,877,792 no prime...

k=60849 is up to n=1,804,626 no prime...

Some precisions about the present "speed" of this desert crossing :

k=60849 is tested on a dual core Centrino, and each n requires a little less than 8 hours presently (but there are 2 "simultaneous" tests)...
k=23451 is tested on a 2.53 GHz Pentium 4, and each n requires a little less than 6 hours presently...

May we know about the prime test progress on k=18534 and k=64494 ?

An updated status of this search would be now useful!

Best Regards,
Jean

tcadigan 2007-10-03 13:36

I am still going but progress is slow, I have to keep my computer off much more than before to save power.

k=64494 just finished n=1745162

I'm still running it...

-Tyler

Citrix 2007-10-04 04:28

k=18534 is at 1.5M. I haven't touched it for a while. If anyone wants to work on it, they can. It is slightly faster than the other k's being less than 10,000.

Jean Penné 2007-10-04 12:16

I take now k=18534 up to 2,000,000
 
[QUOTE=Citrix;115669]k=18534 is at 1.5M. I haven't touched it for a while. If anyone wants to work on it, they can. It is slightly faster than the other k's being less than 10,000.[/QUOTE]

Well, I launched it on an AMD Athlon 64 3700+ , 2199.66 MHz speed
It starts at n=1,500,606
For now, the time by iteration is 6 Ms

The date of the presieved file I am using is 04/02/2007

There are 692 candidates in the file, so, it would be completed before the end
of this year, if no prime found...

I wish we will have better luck now!

Regards,
Jean

Jean Penné 2007-11-02 07:29

My status to-day...
 
[QUOTE=Jean Penné;115685]Well, I launched it on an AMD Athlon 64 3700+ , 2199.66 MHz speed
It starts at n=1,500,606
For now, the time by iteration is 6 Ms

The date of the presieved file I am using is 04/02/2007

There are 692 candidates in the file, so, it would be completed before the end
of this year, if no prime found...

I wish we will have better luck now!

Regards,
Jean[/QUOTE]

Here is my status to-day 02-Nov-07 :

k=18534, n=1674846, no prime...

k=23451, n=1901548, no prime...

k=60849, n=1836366, no prime...

After the last success of SoB, I think we might also make some double checking...

Regards,
Jean


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