555*2^471517-1

831*2^471566-1

987*2^472802-1

871*2^435891-1 is prime!
This is my first prime that at the time of discovery isn't my largest prime (I found one in the rally that's larger than this). :smile:

681*2^460099-1 is prime

507*2^473865-1 is prime.

993*2^460718-1 is prime

PS:
this is the 600th prime in this thread for NPLB!

957*2^460820-1 is prime

857*2^485006-1 is prime!
This is NPLB's largest known prime, any drive!

689*2^460772-1 is prime

Thanks for the cool info. about NPLB primes Karsten and Mini-Geek!

375*2^513834-1 is prime.

[quote=glennpat;136004]375*2^513834-1 is prime.[/quote]
Wow--the largest-NPLB-prime record broken twice in less than a day! :shock: Congratulations on the big prime. :smile:

Carlos' 331*2^600339-1 is actually the biggest found by NPLB, although it wasn't from one of the main drives.

Regardless, a nice run of bigger primes here and it's nice to see the 3rd drive finally find a new one.


Gary

471*2^461146-1 is prime

775*2^486913-1 is prime

Henry found his first prime for NPLB. It's a big NEW prime for drive 3!

Check your PM Henry. Congrats! :smile:


Gary

595*2^478771-1 is prime

[quote=gd_barnes;136162]Henry found his first prime for NPLB. It's a big NEW prime for drive 3!

Check your PM Henry. Congrats! :smile:


Gary[/quote]
I already sent him a notification via email. :smile: So I guess he'll get notified twice. :rolleyes:

375*2^514874-1 is prime

507*2^505096-1

955*2^505151-1 is prime

815*2^488502-1

437*2^461908-1 is prime

685*2^461971-1 is prime
827*2^505402-1 is prime

These were both within an hour of the starting of the rally, but were on cores setup for the rally. I happy to take them when I get them:smile:. Could be a fun weekend!

885*2^489785-1

Prime
 

[B]937 · 2^479725-1 Is a Prime![/B]

[B]/Lennart[/B]

Prime
 

715 · 2^520195-1 Is a Prime!

Prime
 

895 · 2^520479-1 Is a Prime!

631*2^462929-1 is prime

>Prime
 

561 · 2^520850-1 Is Prime!

519*2^506051-1 is prime

Prime
 

[B]481 · 2^479573-1[/B]

user=gd_barnes
[06/21/08 18:09:44]
423*2^462792-1 is prime! Time : 549.0 sec.

confirmed prime

353*2^519312-1 is prime

[quote=glennpat;136509]353*2^519312-1 is prime[/quote]

After 8 consecutive confirmed primes between n=476K and 513K by drive 3, that's now 3 consecutive new primes between n=513K and 520K.

Thanks everyone for sticking with that drive! I'm sure there are plenty more new primes there.


Gary

789*2^490711-1
831*2^490927-1
751*2^491695-1
563*2^491980-1
797*2^492100-1

545*2^500398-1 is prime

609*2^492403-1
983*2^493212-1

[SIZE=2]321*2^514041-1 is a confirmed prime [/SIZE]

After a big void on the port 300 server:

949 · 2^482315-1 is prime, currently 1596 on the list!

And I'm happy with my 3th prime ofcourse :-)

[quote=MrOzzy;137244]After a big void on the port 300 server:

949 · 2^482315-1 is prime, currently 1596 on the list!

And I'm happy with my 3th prime ofcourse :-)[/quote]


FINALLY!!

Unfortunately we've experienced massive gaps in primes on port 8500, port 300, and my individual-k efforts here at NPLB for over a week all at the same time. The gap on port 8500 was the largest we've ever had. Nearly n=5K without a prime for 300 k's! And on port 300, I think that's one of the largest we've had for that port.

I'm pouring 80% of all of my resources on port 300 now. 90% after another effort finishes in about 3 days.


Gary

[QUOTE=gd_barnes;137269]The gap on port 8500 was the largest we've ever had. Nearly n=5K without a prime for 300 k's!

I'm pouring 80% of all of my resources on port 300 now. 90% after another effort finishes in about 3 days.

Gary[/QUOTE]

yeah that 8500 gap was rather disheartening to say the least... I've got the resources on 300 now that 8500 is out of the way. We'll just have to take it day by day and see how the heat factor goes. I've got 3 old heat producers off-line now. In another day or two I'll have to take a couple of the dual cores off-line as I'll have to move a quad into this room and give the wife back her spare room that she was letting me run the quad in. And at that point I'll be at the max cores I'll be able to run for the rest of the summer on the good days. But it's better than nothing! :)

[quote=Brucifer;137282]yeah that 8500 gap was rather disheartening to say the least... I've got the resources on 300 now that 8500 is out of the way. We'll just have to take it day by day and see how the heat factor goes. I've got 3 old heat producers off-line now. In another day or two I'll have to take a couple of the dual cores off-line as I'll have to move a quad into this room and give the wife back her spare room that she was letting me run the quad in. And at that point I'll be at the max cores I'll be able to run for the rest of the summer on the good days. But it's better than nothing! :)[/quote]


Thanks for continuing to help Bruce. Early this afternoon, it looked like your resources were just a little more than mine on port 300, which is a great help.

I think David's server is just messed up. He's done something to make LLRnet report all composites. :smile:


Gary

AT LAST!!!

921*2^483762-1 is prime

425*2^521696-1 is prime!

Hopefully this marks an end to the primeless gap that we've been in recently. :grin:

[quote=Anonymous;137415]425*2^521696-1 is prime!

Hopefully this marks an end to the primeless gap that we've been in recently. :grin:[/quote]

Perhaps...

641*2^496430-1 is prime


This was reported to my Email within 30 mins. of your posting. :smile:


G

[06/29/08 23:59:28]
649*2^476415-1 is prime! Time : 792.0 sec.
10 days late but better late than never. :smile:

939*2^497824-1 is prime

We're finally starting to roll again:

803*2^497908-1 is prime

The single greatest k for NPLB?...
 

Rollin', rollin', rollin' ... :smile:

871*2^498385-1 is prime


k=871 is likely the single greatest k for NPLB. This makes an incredible EIGHT top-5000 primes for this k reported by our project including two for yours truly! I haven't even checked drive 2 for non-reportable primes.

429*2^499671-1 is prime.

They come in 3's...
 

451*2^501525-1 is prime
519*2^501728-1 is prime
883*2^501779-1 is confirmed prime

David, my mouth dropped when I saw this on your web page so I had to double check the first two with success. Everything looks like it's working great on your web pages!

In the words of Chris (Flatlander), I now own 2% of the top-5000! lol

Nice catch on port 400 :)

[QUOTE=gd_barnes;137737]451*2^501525-1 is prime
519*2^501728-1 is prime
883*2^501779-1 is confirmed prime

David, my mouth dropped when I saw this on your web page so I had to double check the first two with success. Everything looks like it's working great on your web pages!

In the words of Chris (Flatlander), I now own 2% of the top-5000! lol[/QUOTE]

Congratulations! It shouldn't take too long until you're in the top ten. :smile:

745*2^502499-1 is prime

497*2^506812-1 is prime

829*2^507641-1 is prime

411*2^503501-1 is prime

PrimeSearch is almost at second spot in total of prime numbers.

[quote=em99010pepe;138002]PrimeSearch is almost at second spot in total of prime numbers.[/quote]

16 more to overtake PIES once mine is confirmed assuming none drop off.

From drive 3:

user=XtremeSystems_glennpat
[18/07/2008 10:03:18 PM]
349*2^529251-1 is prime! Time : 20229.0 sec.

confirmed prime

A new top-5000 prime from LLRnet server IB400:

user=Anonymous
[19/07/2008 09:55:49 PM]
829*2^503691-1 is prime! Time : 4534.0 sec.

Another one down! :w00t:

[quote=Anonymous;138044]A new top-5000 prime from LLRnet server IB400:

user=Anonymous
[19/07/2008 09:55:49 PM]
829*2^503691-1 is prime! Time : 4534.0 sec.

Another one down! :w00t:[/quote]


Congrats! :smile: That's the same k I found a prime for from port 300 a few days ago. They definitely bunch together!


Gary

[quote=gd_barnes;138057]Congrats! :smile: That's the same k I found a prime for from port 300 a few days ago. They definitely bunch together!


Gary[/quote]
Thanks! :smile: Interestingly, they seem to be bunching for me personally, too--my last one was sometime last week (if memory serves).

923*2^503892-1 is prime

This is a first...one prime each from two different servers in the same day:

597*2^504106-1 is prime
573*2^509312-1 is prime

899*2^504372-1 is prime

hmmmm........ I llrnet like the dickens and hardly anything, I quit that and start sieving and those primes just jump out like the cotton puffs off a cottonwood tree.......... :shock:

[quote=Brucifer;138257]hmmmm........ I llrnet like the dickens and hardly anything, I quit that and start sieving and those primes just jump out like the cotton puffs off a cottonwood tree.......... :shock:[/quote]
It would seem that during the time you were doing the greater portion of your LLRnet contribution to this project, we were in a project-wide "dry spot" as far as primes were concerned. Hopefully we're out of that now. :smile:

[QUOTE=Anonymous;138263]It would seem that during the time you were doing the greater portion of your LLRnet contribution to this project, we were in a project-wide "dry spot" as far as primes were concerned. Hopefully we're out of that now. :smile:[/QUOTE]


The post was intended as a humorous jab. :smile:

527*2^509836-1 (Free-DC_Helix-Von-Smelix)

999*2^504311-1

[quote=Brucifer;138265]The post was intended as a humorous jab. :smile:[/quote]
Yeah, I figured as much, though we all really did seem to be in a bit of a dry spot during that time, so I figured I'd mention that. :smile:

Only 4-5 more primes at most needed to overtake PIES for 2nd place! :smile: Theirs are now dropping off at a rapid pace and they currently have 3 primes >= 4990th place. We'll have one drop off in the near future but none for a while after that.

Reported on top-5000 site a few weeks ago by Beyond but not reported in this thread:

927*2^494005-1 is prime
741*2^505381-1 is prime

After a bit of a dry stretch:

507*2^511794-1 is prime


k=507 had no primes between n=241174 and 473865. It has now had 3 since then.

875*2^511928-1 is prime

831*2^513082-1 is prime

NPLB is now in 2nd place all alone for # of primes found!

581*2^513506-1 is prime

A prime a day keeps the ills away...

789*2^513943-1 is prime

471*2^514399-1 is prime

305*2^662808-1 is prime

901*2^530103-1 is prime!

Finally! It's been nearly two months since my last prime, and I "should" find a prime about every month at this size. This was the largest gap (in both time and n/digits) between primes I've had.

:george::wacky::grin::grin::grin:

July was my first month since I started NPLB that I didn't get a prime. With 159580 digits, this is my first prime that will be placed on the short list once verification is finished.

[quote=Mini-Geek;138769]901*2^530103-1 is prime!

Finally! It's been nearly two months since my last prime, and I "should" find a prime about every month at this size. This was the largest gap (in both time and n/digits) between primes I've had.

:george::wacky::grin::grin::grin:

July was my first month since I started NPLB that I didn't get a prime. With 159580 digits, this is my first prime that will be placed on the short list once verification is finished.[/quote]


Congrats! That's a biggie right after the fftlen change! So, what does this "short list" mean anyway? What causes a prime to be on the short list? Is there some LONG list that the rest of the primes are on? (lol)


Gary

[quote=gd_barnes;138771]Congrats! That's a biggie right after the fftlen change! So, what does this "short list" mean anyway? What causes a prime to be on the short list? Is there some LONG list that the rest of the primes are on? (lol)


Gary[/quote]
The "short" list is every prime over 150,000 digits, plus smaller primes that are of special, interesting forms, while the normal list is the top 5,000 primes, plus smaller primes that are of special, interesting forms. With current primes, that means it's the top 1543 primes, plus special ones.
[url]http://primes.utm.edu/primes/download.php[/url]
By the way, verification has finished, and it is number 1281 and on the short list. This is my tenth prime.

755*2^514952-1 is prime! :grin: (From AES300 LLRnet server, in its highly profitable range of 510.5K-516K.)

561*2^515702-1 is prime

945*2^515762-1 is prime

573*2^515815-1 Helix

10 primes in an n=5500 range for n>510K. AMAZING!! What a range! :smile:

[quote=gd_barnes;138957]10 primes in an n=5500 range for n>510K. AMAZING!! What a range! :smile:[/quote]
Unfortunately, that's a lot less than it "should've" had.
Assuming
700 avg k
2 base
513,250 avg n
5000000000000 sieve, and
128500 pairs (I got this from the number from my n=600 range pairs, even though they're a good bit higher, multiplied appropriately and increased by 2 to make a round number...is the exact number available?),
18.810 primes are expected.

[quote=Mini-Geek;138959]Unfortunately, that's a lot less than it "should've" had.
Assuming
700 avg k
2 base
513,250 avg n
5000000000000 sieve, and
128500 pairs (I got this from the number from my n=600 range pairs, even though they're a good bit higher, multiplied appropriately and increased by 2 to make a round number...is the exact number available?),
18.810 primes are expected.[/quote]


Check your numbers again. There should only be 63000 pairs in an n=5500 range. I just now did a check of the actual sieved file and there are 64082 pairs. So there should be 9.4 primes found. It looks like you doubled-up somewhere.

Hum...I'm disappointed. This tells me that recent ranges have been well below normal since this one SEEMED well above normal even though it's barely above normal.


Gary

[quote=gd_barnes;138965]Check your numbers again. There should only be 63000 pairs in an n=5500 range. I just now did a check of the actual sieved file and there are 64082 pairs. So there should be 9.4 primes found. It looks like you doubled-up somewhere.

Hum...I'm disappointed. This tells me that recent ranges have been well below normal since this one SEEMED well above normal even though it's barely above normal.


Gary[/quote]
Oh...I accidentally multiplied it by 5500/300 instead of 5500/600 for the n=600 range.

Yes, NPLB as a whole, aside from this range, has been rather unlucky as of late. :sad: I'd have to look at several figures to be sure, but off the top of my head, I'd say my manual reservations have been a little below what they should be. Not as drastic as the LLRnet servers, but an annoying amount (such as the gap that caused me to have my first primeless month in July).

[quote=Mini-Geek;138970]Oh...I accidentally multiplied it by 5500/300 instead of 5500/600 for the n=600 range.

Yes, NPLB as a whole, aside from this range, has been rather unlucky as of late. :sad: I'd have to look at several figures to be sure, but off the top of my head, I'd say my manual reservations have been a little below what they should be. Not as drastic as the LLRnet servers, but an annoying amount (such as the gap that caused me to have my first primeless month in July).[/quote]


Strange that you've had bad luck on the servers. As a general rule, I've had well above normal luck on the servers except for that nefarious n=473K-478K range (or 463K-468K; I can't remember exactly). It's on my manual reservations on drive 1 from long ago that I had bad luck.

And then there's the individual-k reservations...I won't even talk about how bad that has been for me.


Gary

[QUOTE=Mini-Geek;138959]
(...)
128500 pairs (I got this from the number from my n=600 range pairs, even though they're a good bit higher, multiplied appropriately and increased by 2 to make a round number...is the exact number available?),
(...)[/QUOTE]

for the number of pairs in a (1k-)range see the Team Drive page: there is a column with number of pairs for all ranges!

[quote=gd_barnes;138977]Strange that you've had bad luck on the servers. As a general rule, I've had well above normal luck on the servers except for that nefarious n=473K-478K range (or 463K-468K; I can't remember exactly). It's on my manual reservations on drive 1 from long ago that I had bad luck.

And then there's the individual-k reservations...I won't even talk about how bad that has been for me.


Gary[/quote]
I didn't mean that I've had bad luck on the servers. Actually, I've basically only run them during rallies, and I've found one prime through them. I'd guess that's about average (or above average), considering the number of rallies. I meant the primes NPLB as a whole has found, LLRnet in particular since that's what a vast majority of NPLB is done on, has slowed down disproportionately.
Funny that you found a prime in your individual-k so soon after posting that...:smile:
[quote=kar_bon;138996]for the number of pairs in a (1k-)range see the Team Drive page: there is a column with number of pairs for all ranges![/quote]
Oh, right. I don't generally use those pages, and forgot they have the number of pairs.

405*2^516432-1 is confirmed prime