Here it finally is...first one...
 

Well, I just started the LLR on my 12 large heavy-weight k's at n = 333335. And wouldn't you know it, within 3 hours and on just the 30th candidate test, I had my first top-5000 prime! (I think this makes up for my barren search of k=289 from n=260K to 500K.) :wink:

After double-checking it, I quickly created a prover account and submitted it on the top-5000 site before (I thought) it might not be big enough! :smile: But a later calculation showed that it will come in at 3797th place as of 4:30PM CDT U.S. not counting any primes waiting to be approved ahead of me. But the funny thing is that when I submitted it, the site gave me a warning that it estimated that my prime would only be on the list for '0 weeks'. I guess all of those n=333333 primes confuse their estimates. After all, it will most likely take 2-4 months to knock off nearly 1200 primes!

Here it is...
102765*2^333354-1 (100355 digits)


Not only did I get lucky once on how fast I found one, I actually got lucky twice. At the last minute before I started, I changed my starting point from n=333400 down to n=333335. I originally had it higher to guarantee that any primes found would be ahead of all n = 333333 primes, some of which have 19-digit k's. But when I realized that most of them are for k < 20G, that those are all for the n=333333 TPS search effort that I wanted to knock off, and that some of my k's were nearly as big, I lowered it.

The first one of something is always the most fun. I promise my future posts here will be short. :smile: :rolleyes:


Gary

[quote=gd_barnes;112844]After all, it will most likely take 2-4 months to knock off nearly 1200 primes!
[/quote]

Less if I help you! If you want we can split some work....for the moment I'm helping my team at eOn project but right now, and if you want, I can easily free up two machines (P4 3.0GHz, AMD64 3000+). I'll wait for your PM.

Carlos

[quote=em99010pepe;112845]Less if I help you! If you want we can split some work....for the moment I'm helping my team at eOn project but right now, and if you want, I can easily free up two machines (P4 3.0GHz, AMD64 3000+). I'll wait for your PM.

Carlos[/quote]

Not a chance! Nice try but these are going to be all mine mine mine! :grin:

More seriously...I'll shortly have 3-4 cores working on the entire range that I sieved. After spending months finding small primes and doing a lot of verification here as well as nearly 4 weeks sieving them all from n=200K to 400K, I'm ready to spit out several big ones! :wink:

But I am involved in a double-checking effort and I'm just now beginning to do some sieving on 6 k's that Kosmaj suggested. If you want to assist in that, see the 'double checking' thread here. I'll do a little LLRing on the ranges that he suggested but they will take a long time and so I'll will post my sieves in that thread when I'm done sieving them. It's not too glamouous but it definitely needs to be done.

Thanks for the offer!


Gary

Are you sure?

(Better move this discussion to another thread)

EDIT:

No double-checking for me, only interested in finding new primes. Thanks anyway.

Gary, congrats on your first prime!!

BTW, you should have included srsieve, which I beleive you used for sieving, in your prover's code. Now it can be done only by contacting prof. Caldwell by mail. But there are many prover's codes without sieving software specified...

srsieve in prover code
 

It's interesting that you mentioned that because it crossed my mind after the fact but I wasn't sure that anything could be done at that point. Here's the way it went...at first, I created prover code L441 only for LLR and myself because I didn't see a selection for the project or site and assumed that it would take me to another screen to choose that option. But when it didn't, before I submitted the prime, I realized that I could just put RPS in the space provided and so created prover code L442 to add our site here. (I think L441 will just be deleted later after it isn't used for a while.) I wasn't even thinking of looking for sieving software on there. I'm not sure if it's a menu selection or not.

It was actually sr2sieve that I used for about 80% of the sieving so that is what should get the credit. From the top-5000 site perspective, is there a difference between sr2sieve and srsieve?

After I get an answer, I'll see if I can have Prof. Caldwell add sr2sieve or srsieve to prover code L442. I think that most of my top-5000 primes will use sr2sieve in the future although a small percentage may use srsieve, sr1sieve, or NewPGen.


Thanks,
Gary

For prover-code purposes, srsieve refers to the family of programs created by Geoff. It matters not which of sr, sr1, sr2 you use.

Carlos- if you wish to assist with some LLR work, let me know what size exponent you're most interested in. I have a couple of k's without homes right now, all sieved to my usual standards (i.e. a little too far).

-Curtis

[quote=VBCurtis;112860]For prover-code purposes, srsieve refers to the family of programs created by Geoff. It matters not which of sr, sr1, sr2 you use.

-Curtis[/quote]

OK, thanks. I'll kick a note off to Prof. Caldwell shortly.

Gary

Congratulations Gary on your first reportable prime! :tu:
BTW: 151515*2^1043018-1 (313985 digits) :cool:

[quote=Cruelty;112896]
BTW: 151515*2^1043018-1 (313985 digits) :cool:[/quote]


Now, stop that...you're just showing off! :grin:

Great prime!

[quote=VBCurtis;112860]
Carlos- if you wish to assist with some LLR work, let me know what size exponent you're most interested in. I have a couple of k's without homes right now, all sieved to my usual standards (i.e. a little too far).

-Curtis[/quote]

Curtis kindly sent me the 923 to LLR from 300k to 500k.
I hope to find "some primes" and I would like to share "them" with him, do I have to create another Prover Account?
Here's my progress:
300k-330k - P4 3.0GHz (work machine, lost contact to it a few hours ago)
330k-360k - AMD 64 3000+ (at 332k)
400k-425k - AMD 64 X2 3800+
425k-450k - AMD 64 X2 3800+
450k-475k - T5500
475k-500k - T5500

Carlos

Two answers: Yes, you *would* have to make a new prover code to do this.
No, because you should not share them with me. That sieve took perhaps 50 hours on an AthlonX2. I reserved too much work on primesearch in the 300-1000 range, and am happy the work is getting done. Trust me, that's plenty of payback on its own.

If you ignore this reasoning, you should share one with steven (k=31,207) instead of myself, as he did much of the sieving on this number (and would be quite excited by such thanks).
-Curtis

Thanks Curtis.
I didn't switch yet the two dual-cores because it's to damm hot here at home. I live near the beach and it's suppose to be a little more cold but today the temperature is above 35ºC. I don't have vent or AC so probably I will turn them on at night.

Carlos

Lightning strikes twice...
 

120023475 * 2 ^ 334084 - 1 is prime! (100578 digits)

It actually beats all of the n=333333 primes this time. :rolleyes:

This is getting fun! :smile:

Kosmaj, srsieve has now been added to my prover code.


Gary

From the 5th drive:

237*2^729654-1 (219651 digits)

83*2^624398-1 (187965 digits)

Lightning strikes 3 times (?!!)
 

On a roll now...

775784295*2^334420-1 is prime (100680 digits)

One of my cores also just now confirmed previously found prime 115029915*2^334568-1

Those n=333333 primes are going DOWN baby! :grin:


Gary

20152491645*2^440789-1 (132702 digits)

One more submitted together with Bliss :-)

91*2^633169-1 (190605 digits)

405*2^516432-1 is prime. (155465 digits).
-Curtis

775784295*2^340381-1 is prime (102474 digits)

Another...they come in groups...
 

775784295*2^341106-1 is prime (102693 digits)


k=775784295 is pounding out primes at a ridiculous rate. 50 primes from n=10K to 200K, one from n=200K to 215K, and 3 more from n=333.3K to 341.3K. Remarkable!

83*2^654488-1 (197023 digits)

141*2^619742-1 (186564 digits)

2123*2^476034-1 (143304 digits)

269*2^628904-1 (189322 digits)

52654604145*2^455655-1 (137177 digits)

From the 5th Drive:

273*2^742930-1 (223647 digits)

My first top-5000 prime
 

7755*2^384196-1 (115659 digits)

Found on 2007 Sept. 22 at 21h37m UTC (search started at n = 330000).

7755*2^n-1 is also prime for n = 2, 3, 8, 10, 14, 17, 22, 29, 38, 47, 54, 55, 87, 96, 106, 175, 204, 224, 232, 321, 380, 444, 446, 539, 567, 729, 776, 825, 1014, 1022, 1135, 1367, 1476, 1622, 1962, 1998, 2184, 2323, 2747, 4675, 4914, 5119, 6317, 6534, 6558, 6687, 6874, 7015, 7252, 7755, 8088, 8795, 10520, 10524, 15931, 17967, 18789, 20034, 22588, 28016, 28834, 30257, 31299, 37547, 38815, 55695, 60844, 66578, 66578, 73814, 74030, 78470, 84996, 85340, 96295, 133755 (checked to n = 143121 so far).

Patrick
 

Congrats on your first prime on the list of Top-5000 largest primes, and welcome to RPS!

52654604145*2^457564-1 (137752 digits)

2145*2^345415-1 is prime (103984 digits)

201*2^775453-1 is prime (233437 digits).
-Curtis

Curtis
 

Nice prime! Much better than those at 600k you were looking for...

new prime for k=137
 

David Broadhurst found 137*2^1849238-1 to be prime (actually in test at Top5000).

he's searching for k=137 and 137137. see his bio-page [url]http://primes.utm.edu/bios/page.php?id=231[/url].
so Cruelty should contact him?!

I am trying to reach him to verify what ranges he has tested. However I am a little bit sad right now, as I've spent some time on sieving it till 37T :sad:

20152491645*2^460155-1 (138531 digits)

3545685*2^349477-1 is prime (105210 digits)

From the 5th drive:

213*2^760942-1 (229069 digits)

amphoria,

You're so lucky!

Carlos

16995*2^364274-1 is prime (109662 digits)

2145*2^372766-1 is prime (112218 digits)

91*2^711335-1 is prime! (214136 digits)

One more from the 5th Drive submitted together with Bliss: :cool:

285*2^780300-1 is prime! (234897 digits)

BTW, the previous k=285 prime was way back at n=392397 :shock:

686701125*2^355908-1 is prime (107148 digits)

20152491645*2^475768-1 (143231 digits)

3335*2^423320-1 (127436 digits)

3428677395*2^357369-1 is prime (107589 digits)

[quote]Currently [B]primes must have 100354 or more digits[/B] to make the list...[/quote]

I suppose within a month or so RPS will be first in number of primes, is that right?

the last month there were about 105 primes found with more than 100354 digits. so every month TPS/PrimeGrid get 50 counting primes lost (because half-counted, kicked out of Top5000). PrimeGrid's biggest prime is at place 4050 and therefore in 8 months there will be no prime in Top5000. so if RPS finds about 20 more primes it will be the first rank in number of primes ahead of Prime Internet Eisenstein (some more for new Eis-ones). i could check how many primes are listed for RPS in a month for the last year.
overview of projects and number of primes here: [url]http://primes.utm.edu/bios/top20.php?type=project&by=PrimesRank[/url]

26565*2^393136-1 is prime (118351 digits)

Continuing the take-down of TPS/prime grid primes with one of my favorite k's...

120023475*2^359311-1 is prime (108172 digits)

That's 3 in 4 days and 4 in 9 days! :smile:

Finally, one to share with Sheep!
 

After a frustratingly long dry spell (since <600k), 99 has produced a prime:
99*2^1106989-1 (333239 digits). :w00t: :george:

A new prover code was created to share the glory (as it were) with Sheep. This prime is worth 40 normalized primes, so sheep gets credit for 20. Thanks for all the sieving work!

Now, if I could just find one in the 600-632k range... :ermm:
-Curtis

[QUOTE=VBCurtis;117617]
After a frustratingly long dry spell (since <600k), 99 has produced a prime:

99*2^1106989-1 (333239 digits). :w00t: :george:
[/QUOTE]

Congrats! That's a big one!

:tu::bow wave::tu:

Hi Curtis,

Congrats on a nice megabit prime!

(Prof. Caldwell just marked the latest SOB prime as "externally proven" and I beleive he will start his verification machines soon.)

[QUOTE=VBCurtis;117617]After a frustratingly long dry spell (since <600k), 99 has produced a prime:
99*2^1106989-1 (333239 digits). :w00t: :george:

A new prover code was created to share the glory (as it were) with Sheep. This prime is worth 40 normalized primes, so sheep gets credit for 20. Thanks for all the sieving work!

Now, if I could just find one in the 600-632k range... :ermm:
-Curtis[/QUOTE]

Thanks! :blush: :bow wave: :party:

[quote=VBCurtis;117617]After a frustratingly long dry spell (since <600k), 99 has produced a prime:
99*2^1106989-1 (333239 digits). :w00t: :george:

A new prover code was created to share the glory (as it were) with Sheep. This prime is worth 40 normalized primes, so sheep gets credit for 20. Thanks for all the sieving work!

Now, if I could just find one in the 600-632k range... :ermm:
-Curtis[/quote]

WAY TO GO Curtis and Sheep!!! SuWEEEEEEETTT!

:curtisc:


The above Emoticon is called "CURTISC". I thought it was appropriate for Curtis finding a huge prime! :lol:



Gary

[QUOTE=Kosmaj;116753]One more from the 5th Drive submitted together with Bliss: :cool:

285*2^780300-1 is prime! (234897 digits)

BTW, the previous k=285 prime was way back at n=392397 :shock:[/QUOTE]

Wow! Can't believe I missed this before. Thanks so much for sharing it.

Congratulations VBCurtis!!!
Another important fact: this is our 10-th megabit prime :tu:

2089*2^499951-1 (150504 digits)

105*2^801978-1 (241422 digits)

Nice find, Carlos. Is that your largest?
-Curtis

[quote=VBCurtis;117867]Nice find, Carlos. Is that your largest?
-Curtis[/quote]

Yes and the first from the quad-core. Waited three weeks for this....lol

one more prime to find for 2nd place in number of primes in TOP5000!

[quote=kar_bon;117872]one more prime to find for 2nd place in number of primes in TOP5000![/quote]

And RPS is now in second place.....

Another for k=243...
 

243*2^539016-1 is prime (162263 digits)

3615*2^431307-1 (129840 digits)

3335*2^432096-1 (130078 digits)

243*2^616662-1 is prime! (185637 digits)

131*2^603738-1 (181746 digits)

201*840735-1 is prime. (253089 digits)
Lucky month for me so far!
-Curtis

1000065*2^390927-1 (117687 digits)
First Top 5000 prime for k=1000065 :smile:

617*2^1175468-1 (353854 digits)

245*2^606706-1 (182640 digits)

Benson found 9*2^1010277-1 prime

3333333*2^379439-1 (114230 digits)

From the 5th drive:

261*2^802123-1

a prime for k=261 from L261! cool!

105*2^814850-1 (245297 digits)

19437*2^364045-1 is prime (109593 digits)

From the 5th Drive:

291*2^810347-1 (last prime for this k at n=565k)

Big luck: first team drive range and just on prime.
30% done in this range, so there're some primes to find :grin:

Wow, the 5th drive sure has been producing lately! It's only been about a week since the last one. :banana:

James Burt found 22183*2^773447-1 (232836 digits)

67*2^527037-1 (158656 digits)

686701125*2^366708-1 is prime (110399 digits)

2145*2^414996-1 is prime (124930 digits)

24067*2^700073-1 is prime! (210748 digits)

1597*2^579373-1 (174412 digits)

k = 1597 is also prime for n = 13, 4633, 38233, 176293

[quote=AES;119257]1597*2^579373-1 (174412 digits)

k = 1597 is also prime for n = 13, 4633, 38233, 176293[/quote]

Nice one, AES! It's always fun to pick off a nice large prime on a very low-weight k.


Gary

Within 1 of #1!...
 

2145*2^425089-1 is prime (127968 digits)

This puts RPS within 1 prime of the top project! :grin:

After a very long dry period:

75*2^631091-1 (189980 digits) :smile:

Woo hoo! This puts RPS in [URL="http://primes.utm.edu/bios/top20.php?type=project&by=PrimesRank"]first place by number of primes found[/URL]!:banana::banana::banana::banana::banana:

It's still only a tie with PIES, though, so we'll just have to find some more primes to take the lead for ourselves!

We're #1 ... we're #1
 

And HERE it is...RPS is now on top all alone! We're #1...we're #1...oh yeah!! :banana:


2145*2^430852-1 is prime (129703 digits)


k=2145 continues a remarkable run. This makes 2 primes in the last n=5K and 3 primes in the last n=16K. :cool:

58695*2^445378-1 (134077 digits)

And from the 5th drive:

237*2^832053-1 (250476 digits)

[quote=amphoria;119742]58695*2^445378-1 (134077 digits)

And from the 5th drive:

237*2^832053-1 (250476 digits)[/quote]
The 5th Drive strikes again! Woo hoo! :banana::wacky::joe o::paul:

139*2^451367-1 is prime (135878 digits)

Testing on k=139 is now up to n=453K.

1000065*2^412918-1 is prime (124307 digits)