Help test 210885 - Find a new top 5000 prime!
 

It's now time to help find some primes!

We are [URL=http://www.mersenneforum.org/showthread.php?s=&threadid=1450]currently sieving 210885[/URL] to n=1,000,000. We are at a point where it's faster to LLR test the smaller n's, then it is to sieve them.

[URL=http://www.mersenneforum.org/showthread.php?s=&threadid=713]15k=210885 has produced 101 primes from n=2 to n=213,029[/URL] We would like to gather more information on this 15k, so we would like to continue testing it to n=1,000,000. We now have llr .txt test files ready to go to help search for k=210885 primes! (This part of our project is the same idea as 321 search)

How to help search for primes:
1. If you don't have LLR.exe, [URL=http://www.mersenne.org/gimps/]download the latest version of llr.zip here![/URL]

2. Download one of the available test files below (right-click link, and select "Save Target As"). Save the file in the same folder as LLR.exe. Post to this thread that you have downloaded a test range.

3. Open LLR, and select the "Test" menu, then "Input Data"
In the "Input File (From NewPGEN):" box enter the file from step 2 (IE - 275to280.txt)
In the "Output file:" box, enter prime.txt
Click "OK"
(If the LLR icon doesn't turn from "Red" to "Green" repeat step 3, and it will start the 2nd time you hit "OK")

3.5 If you see a number show up in the prime.txt file, you have found a new prime that will qualify for the top 5000 prime list! If you don't have a 15k top 5000 prime list prover code, I'll help you set one up so you will receive credit for the new prime!

4. When the test is complete, please e-mail the lresults.txt file to [EMAIL=kosmaj@yahoo.com]Kosmaj[/EMAIL]. Rename the file so that the range is included in the name, for example lresults500to502.txt.

If you have any questions mail me (private mail, e-mail) and I'll try to help you.

Status:
[CODE]
Range Tested by
2 - 230,000 - jocelynl - Complete - 101 primes found!
230,000 - 235,000 - SlashDude - Complete
235,000 - 240,000 - Cyrix - Complete
240,000 - 255,000 - SlashDude - Complete
255,000 - 265,000 - Cyrix - Complete
265,000 - 270,000 - SlashDude - Complete
270,000 - 275,000 - jocelynl - Complete - prime found! (n=270025)
275,000 - 295,000 - SlashDude - Complete
295,000 - 300,000 - ET_ - Complete - prime found! (n=295335)
300,000 - 315,000 - SlashDude - Complete - prime found! (n=301665)
315,000 - 330,000 - SlashDude - Complete - prime found! (n=315639)
330,000 - 345,000 - Kosmaj - Complete
345,000 - 350,000 - SlashDude - Complete
350,000 - 355,000 - Kosmaj - Complete
355,000 - 360,000 - ET_ - Complete
360,000 - 370,000 - SB2 - Complete
370,000 - 375,000 - Kosmaj - Complete
375,000 - 380,000 - SlashDude - Complete
380,000 - 385,000 - Kosmaj - Complete
385,000 - 405,000 - SlashDude - Complete
405,000 - 410,000 - jocelynl - Complete
410,000 - 415,000 - Kosmaj - Complete
415,000 - 420,000 - Cyrix - Complete
420,000 - 435,000 - SlashDude - Complete
435,000 - 450,000 - Kosmaj - Complete
450,000 - 455,000 - SlashDude - Complete
455,000 - 465,000 - Kosmaj - Complete
465,000 - 470,000 - jocelynl - Complete
470,000 - 475,000 - SlashDude - Complete
475,000 - 480,000 - Kosmaj - Complete
480,000 - 485,000 - SlashDude - Complete
485,000 - 490,000 - Kosmaj - Complete
490,000 - 495,000 - SlashDude - Complete
495,000 - 502,000 - Kosmaj - Complete
502,000 - 504,000 - NiceMedTexMD - Complete
504,000 - 520,000 - Cruelty - Complete
520,000 - 522,000 - Dougy - Complete
522,000 - 524,000 - Cruelty - Complete
524,000 - 526,000 - Dougy - Complete
526,000 - 528,000 - Cruelty - Complete
528,000 - 530,000 - Dougy - Complete
530,000 - 532,000 - Cruelty - Complete
532,000 - 534,000 - grobie - Complete
534,000 - 536,000 - Cruelty - Complete
536,000 - 538,000 - Joshua2 - Complete
538,000 - 540,000 - Cruelty - Complete
540,000 - 542,000 - NiceMedTexMD - Complete
542,000 - 548,000 - Kosmaj - Complete
548,000 - 552,000 - Cruelty - Complete - prime found! (n=549843)
552,000 - 560,000 - Joshua2 - Complete
560,000 - 562,000 - gd_barnes - Complete
562,000 - 600,000 - Cruelty - Complete
600,000 - 624,000 - VBCurtis - Complete
624,000 - 645,000 - Karsten - Complete
[/CODE]

[B]Available files[/B]
Sieved through p=10T
[URL="www.15k.org/210885/test/645to648.txt"]645to648.txt[/URL] 331
[URL="www.15k.org/210885/test/648to651.txt"]648to651.txt[/URL] 320
[URL="www.15k.org/210885/test/651to654.txt"]651to654.txt[/URL] 335
[URL="www.15k.org/210885/test/654to657.txt"]654to657.txt[/URL] 350
[URL="www.15k.org/210885/test/657to660.txt"]657to660.txt[/URL] 334

Please reserve the lowest range available. Thanks! :grin:

If you would like to verify any results, the completed lresults.txt file can be found at [url]http://www.15k.org/210885/lresults210885.txt[/url]

I´m testing the "235 to 240"-numbers.

[QUOTE][i]Originally posted by cyrix [/i]
[B]I´m testing the "235 to 240"-numbers. [/B][/QUOTE]
Thanks cyrix!!

I hope you find a prime in your range :grin:

We have a new largest 15k prime!!!!

210885*2^315639-1 is prime!

It's 95,023 digits long, and will go into the top 5000 list in spot #413 :showoff:

congrats
 

Lets now make it to the top 100 primes.

Citrix
:cool: :cool: :cool:

Re: congrats
 

[QUOTE][i]Originally posted by Citrix [/i]
[B]Lets now make it to the top 100 primes.
[/B][/QUOTE]
Thanks! :grin:

I added 4 ranges above my current search range so someone can try to find the next largest 15k prime! I don't want to add more ranges because I'm still sieving the larger n's. If you want to request a range, just let me know, and I'll be happy to set it up!

FYI-
The reason I took the 300,000 to 330,000 range - I have a training class next week, so I needed to load up 2 machines for the long weekend, plus the first 3 days of next week... I never thought I would find a prime right in the middle of the 30k split! (at 315k)

The top 100 primes:
Currently the #100 prime on the top 5000 list is 193876 digits. We will be in this range when we start testing n>645900. I know we will get there the only question is who will find the first top 100 prime? (...lets work on the smaller ranges first, till the larger ones are sieved )

ET_ found a 210885 prime yesterday! Congratulations on 210885*2^295335-1 is prime!

I found another one today - 210558*2^301665-1 is also prime!

I´m testing now the range 255-270, too.

I*m starting range 270-275

Joss

Hello, I'm new here but I'll try to help as much as I can. The 330-340 range is mostly done, I'll report results tomorrow because I cannot access those machines now.

To keep another box busy I'd like to reserve the 340-345 range too.

Processing of the 330-340 range is completely done: No primes found. :down:

Crunching the guys in the 340-345 range is under way and [u]I'd like to reserve the 350-355 range[/u] too (just noticed that SlashDude got 345-350). :grin:

[QUOTE]ET_ is testing 295to300.txt[/QUOTE]

Completed.

Only one prime discovered.

Luigi

Is 355to360 still available? :-)))

I'm going to work on it...

Luigi

Is 360-365 still available?

If it is I'll run it.

SB2,
It is available. Go ahead and LLR it.

Citrix
:cool: :cool: :cool:

Testing as we speak, and if no one objects (too loudly) I will take the next range in the list as well, for a different machine. '365to370'.

360-370 is now reserved for you. If your computer is not a P4, please consider contributing to the sieving effort also. :bounce:


Citrix
:cool: :cool: :cool:

[QUOTE][i]Originally posted by Citrix [/i]
[B]360-370 is now reserved for you. If your computer is not a P4, please consider contributing to the sieving effort also. :bounce:


Citrix
:cool: :cool: :cool: [/B][/QUOTE]

Thanks, the two ranges for 210885 I,ve reserved here are going on P4's (1.8a & 2.0a), the other previously reserved numbers are on AXP's, but I still have a considerable number of AMD/PIII's available. In fact was just going to post a "best course of action" thread to get advice on what would be the use for these machines in terms of moving our project ahead. So point me in the right direction, if you please. :smile:

If you want to find primes you should just LLR and not sieve. But for maximum efficiency of the project you should sieve about a trillion on your AMD's. Please reserve some sieving ranges on the Sieiving thread. P4's are really bad at sieving and should be exclusively be used for LLRing.

Citrix
:cool: :cool: :cool:

I must be missing something as I do not see the current available ranges in that thread.

None are available right now since Slashdude and I are seiving from 1.0 to 1.8 trillon. Slashdude (mark) has done it to 4 trillon. He should have some range available soon. I'm working on P-1 software. Hopefully I should have it running within a few days.


Joss L15

Thanks for the reply, I'll put the machines doing something else until then.

[QUOTE][i]Originally posted by SB2 [/i]
[B]Thanks for the reply, I'll put the machines doing something else until then. [/B][/QUOTE]

Hi SB2!
Welcome back! I'll send you a PM with a sieve range. I added more llr ranges too. Sorry for the delay, I've had a sick home since Friday. (All 3 of use have been sick the last 2 days :sick: )

Hope you and the family are feeling better soon.

SlashDude, I hope you feel better now.

I'd like to reserve the 370-375K range. 340-345 will be done in a few hours, less than 50 to go.

[QUOTE][i]Originally posted by Kosmaj [/i]
[B]SlashDude, I hope you feel better now.

[/B][/QUOTE]
[QUOTE][i]Originally posted by SB2 [/i]
[B]Hope you and the family are feeling better soon. [/B][/QUOTE]

Thanks! I think we are all feeling much better tonight :grin:
Having a sick 1 1/4 year old, a sick pregnant wife (29 weeks along, 11 to go) and myself being sick is something I never want to go through again!

I'm still trying to work out how to score stats. If you have a completed range and still have the lresults.txt file, could you please e-mail it to me at [email]15k@strikepoint.com[/email] ? If you don't have it, could you please post that it's complete, so I can update the status.

Thanks again everyone for the help!! We are due for another prime soon!

-Mark

Ranges 340-345 and 350-355 are both completely done: no primes found. I'm now working on 370-375 and next I'd like to reserve 380-385.

SlashDude, I keep all results file and will send them to you during the day.

BTW, can you add to the "Status" table how many primes were found in the 2-230,000 range, 101 or more? Thanks!

[QUOTE][i]Originally posted by Kosmaj [/i]
[B]Ranges 340-345 and 350-355 are both completely done: no primes found. I'm now working on 370-375 and next I'd like to reserve 380-385.

SlashDude, I keep all results file and will send them to you during the day.

BTW, can you add to the "Status" table how many primes were found in the 2-230,000 range, 101 or more? Thanks! [/B][/QUOTE]

I updated the status table.

Thanks for testing! It's about time for another prime. I hope your range has one :grin:

Jocelynl put together a list of our 15k primes, plus others at [url]http://www.15k.org/homestats.htm[/url] The list has all of the primes for 210885, and shows where we still have gaps.

I'm doing 405 to 410 range :cat:

Joss L15

Under 265,000 there are no mor primes (my range now is completed).

I´m taking now the 415-420 range to test.

I have combined the lresults.txt files from the completed ranges. If you would like to see it, it's at [url]http://www.15k.org/210885/lresults210885.txt[/url]

No primes found in my ranges, with 370-375 completely done, and about 120 more to test in 380-385.

I'd now like to reserve the next available range which according to the list is [u]410-415[/u] (which cyrix skipped and went straight to 415-420).

SlashDude, nice work! Are there any plans to do some double checking, by randomly selecting and testing a few exponents from each other's files?

[QUOTE][i]Originally posted by Kosmaj [/i]
[B]
SlashDude, nice work! Are there any plans to do some double checking, by randomly selecting and testing a few exponents from each other's files? [/B][/QUOTE]

I will be running some double-checks to make sure the residues match. I have updated the master [URL=http://www.15k.org/210885/lresults210885.txt]lresults210885.txt[/URL] file with the new results, so it's avaliable to the public to run double checks too!

I am working on gathering more Piii timings today for stats. I would like to try to find a better way to calculate the time each test takes. I'll publish the Piii test times as soon as they are complete. (Within the next day or so)

Thanks again everyone for helping test!

435-440 is almost done: no primes to 439,800 :sad:

But I'd like to try one more range, and I'm taking 440-445 to test.

I completed tests of all candidates in the 435-450 range and found no primes.

I'll appreciate if Cyrix kindly tell us what' going on in his range (415-420) and when can we expect results. If there are no primes there than there is a large gap 315-450 with no primes and the next one should be around the corner. The only problem is which corner, 450 or 500k or higher :-)

oh,
it´s my fault... There are no more primes in my range.
i appreciate .

cyrix

Cyrix, thank you.

Now I'm taking the 455-460 range to test.

455-460 is almost done.

Ahead to the 460-465 range... :yawn: :coffee:

I guess I could do some more testing here.
So I'll take 465-470 range.

Joss

Joss,
Welcome back to the 210885 domain :cool: No action here recently but IMO the next prime is imminent, and it's going to be a 140,000 digits number! I just crossed the 460k boundary. I hope both me and you find primes in our respective ranges :smile: Good luck! I wonder whether SlashDude, Thomas and/or somebody else will join the party (?) BTW, I'm going to report my first 100k digit number in a few hours :cool: (now running the primality test) but it's not 15k.

[QUOTE=Kosmaj]BTW, I'm going to report my first 100k digit number in a few hours :cool: (now running the primality test) but it's not 15k.[/QUOTE]

I guess I know where it comes from... ;-)

Luigi

I'd like to reserve the 475-480 range. No primes in my range up to 464,100. It will be completed during the weekend but I must feed the client now.

Luigi, it was a General Woodall prime.

[QUOTE=Kosmaj]
Luigi, it was a General Woodall prime.[/QUOTE]

I checked it on Prime list... well done! :smile:

Luigi

After 14 ranges and more than 7500 checked candidates no new primes for k=210885... I just completed the last available range (495-500) last night. Not sure whether Slash Dude has more candidates n>500k. Even if he does I'm not sure it's a good idea to go on. True, the next prime can be at n=501k but maybe it's at n=701k. Maybe we wait for the new version of LLR supporting larger k's (?)

Good work Kosmaj!

So our first 15k is done to n=500000.
Now is the time to make the second one reach the same level.
Come on and grab your range on 2995125705

Joss

Is this project still going?

Mike.. :rant:

Yes it is. :grin:
I gave the file to Kosmaj.
He should be getting back to you on this, with new ranges.

Joss

All right, I got the file. The work to place ranges on the server is in progress, until that is done I'll have to e-mail ranges.

[b]NiceMedTexMD[/b], tell me do you want to work on the 500-505k range? It contains 565 candidates. Please note that the exe time per candidate is going to be 20-30% longer than the time for k*2^n-1, k<300, n in the same range.

Is this project still going on?

What ranges are available?

Dr. Mike.. :sick:

The 2995125705 project has been pretty active recently giving
some big primes. It's also part of 15k so you might look there as well.

-Larry

Another question..
 

I'd like to help out a little.. but there are no files to download that I can find.. what am I doing wrong? :(

Dr. Mike..

[email]NiceMedTexMD@AOL.COM[/email] :censored:

Dr. Mike
 

I'll upload some files for you within next 15 hours. Please note that I took liberty to ignore your previous message since it took you exactly half a year (September 9, 2004 -- March 9, 2005) to reply to my previous post :smile: :wink:

I wish you the best of luck in your search. If you find a prime please kindly include the "15k Search" project in your prover's code.

Test files in the 500-520k range are now available thru links in the first post of the thread.

I'm testing 500-502. :geek:

I'm a gonna try 502-504! :showoff:

Dr. Mike..

P.S. Thanks Kosmaj! :nuke:

500-502 complete, no primes.

i ll take 504to506

[B]Janne[/B]
Thanks for joining the search. Can you kindly tell us when can we expect you to complete your range? We are not in hurry, but we had a number of cases where first-time users couldn't complete their ranges (or lost their patience?). I hope you can do it. Happy hunting!

I am going on a 2 weeks holidays, so I'm taking:
506to508.txt
508to510.txt
510to512.txt
512to514.txt
514to516.txt
516to518.txt
It should be ready by July 31-st :showoff:

506 to 518 done no primes

Are the new ranges coming soon? I have noticed that iteration times for 210885 are ~50% lower than for 2995125705 (1.7 vs. 3.4), so for me it makes more sense to focus on 210885 :smile:

[B]Cruelty[/B]
I just put 10 more files on the server.
The problem is that k=210885 has been primeless for quite a while. The next prime is just around the corner, but the problem is to find the right corner :smile:

Happy hunting!

520to522.txt => mine please.

I'm sure there's a prime any minute now.

I take 522 - 524

520to522.txt complete, no primes.
524to526.txt => mine please.

522to524.txt complete, no primes.
taking 526to528.txt

lresults524to526.txt complete, no primes.

528to530.txt => mine please.

526to528.txt complete, no primes.
taking 530to532.txt

530to532.txt complete, no primes

528to530.txt complete, no primes.

Reservations by janne suikkala and L.S. are cancelled. The associated ranges are available for test.

[B]To new users[/B]: Please don't reserve ranges if you cannot complete them. Each range requires several days cpu time on a high end cpu.

I'll take both: 504to506.txt and 518to520.txt

taking 532to534.txt 237

504to506.txt and 518to520.txt completed, no primes :no:

532 to 534 complete (no primes)

Let's see what 534to536.txt has to offer...

534to536 completed - no primes :no:

Taking 536to538.

Completed.

Reserving 538to540.txt

538to540.txt completed - no primes :no:

540 to 542 please..

Dr. Mike... :squash:

Taking 542-546. :sleep:

542-544 complete, no primes.

Taking 546-548.

540 to 542, complete - no primes found. :(

Dr. Mike..

544-548 complete, no primes.

Taking 548to550.txt and 550to552.txt :showoff:

210885*2^549843-1 (165525 digits) - finally!!! :banana: :banana: :banana:

Congrats! That was quite a gap from the last one :surprised

Cruelty
 

Congrats on a nice prime! :cool: :geek:
And on your patience, I think you spent hundreds of cpu hours to find it.
Well, I spent some too, and I came close with the 542-548k range :rolleyes: Maybe there are several primes waiting after the gap :question:

Thanks! Patience was a key to success here :smile:
Let's see who will find the next prime for this "k" :smile:

BTW: no other primes in 548to550 range :no:

550to552.txt completed - no primes :no:

I will be gone for a while, so I will take 552to554.txt ; 554to556.txt ; 556to558.txt ; 558to560.txt

Completed, you might want to check none were skipped since files were merged manually.

Is this k still availabe?
Are there presieved files larger than 570k?

nuggetprime

Yes, it's available, and we have sieved values to n=1M. It was one of very promising Ks but after a large gap between the last two primes we stopped working on it. Still, there can be a few primes to 1M, but nobody knows...

tempting :devil:
I've just noticed that it has ~100-120 candidates left per each range of 1000 - not bad, and LLR will use "irrational base DWT" instead of "zero-padded" so in the era of C2D CPUs it might take not too long to complete it till n=1M. Personally I think that there are at least 2 primes for 560000<n<1000000