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-   -   Report top-5000 primes for all k<=1001 (https://www.mersenneforum.org/showthread.php?t=9891)

Lennart 2014-12-28 21:31

Added [URL="http://primes.utm.edu/primes/page.php?id=119021"]119021[/URL] : 759*2^1387869-1 (417794 digits)

Lennart

mdettweiler 2015-01-05 02:52

831*2^1386482-1 is prime! (port 2000/14th Drive)

Note that this was reported by Gary at the top-5000 site since I missed reporting it for a few weeks (I wasn't checking my NPLB email over the Christmas holiday). I'm not going to bother requesting an official transfer of credit there since I delayed so long. I've been getting a steady enough stream of primes from this drive...one less won't hurt. :smile:

Mini-Geek 2015-01-20 12:46

[URL="http://primes.utm.edu/primes/page.php?id=119116"]555*2^1395429-1 is prime![/URL]

unconnected 2015-01-30 21:59

Added [URL="http://primes.utm.edu/primes/page.php?id=119170"]119170[/URL] : 573*2^1397559-1 (420710 digits)
From port 9000.

mdettweiler 2015-02-09 12:26

[URL="http://primes.utm.edu/primes/page.php?id=119272"]695*2^1390636-1[/URL] is prime! (port 2000/14th Drive)

Mini-Geek 2015-02-09 13:00

[URL="http://primes.utm.edu/primes/page.php?id=119273"]515*2^1398708-1 is Prime![/URL]

gd_barnes 2015-02-17 20:33

A user named "composite" found a prime on port 1468. Composite, let us know if you need help reporting it.

Edit: Composite has reported 325*2^2024035-1 is prime.

Beyond 2015-03-08 13:26

873*2^1394076-1 from port 2000

Mini-Geek 2015-04-01 18:23

[URL="http://primes.utm.edu/primes/page.php?id=119669"]549*2^1406577-1 is prime![/URL] (423425 digits)
No joke! :smile:

Mini-Geek 2015-04-05 12:54

[URL="http://primes.utm.edu/primes/page.php?id=119688"]543*2^1406895-1 (423521 digits) is prime[/URL]

gd_barnes 2015-04-24 00:24

"composite" found a prime for k=319 on April 8th. He still needs to report it.

gd_barnes 2015-05-27 04:05

457*2^1413589-1 is prime

Mini-Geek 2015-06-12 18:08

[URL="http://primes.utm.edu/primes/page.php?id=119996"]119996[/URL] : 555*2^1414837-1 (425912 digits)

gd_barnes 2015-07-16 23:15

473*2^1418790-1 is prime

mdettweiler 2015-07-17 03:49

[url=http://primes.utm.edu/primes/page.php?id=120114]825*2^1402592-1[/url] is prime! :smile: (port 2000/14th Drive)

Yup, still here. Most of my boxes are offline for the summer but I've got the one i5 (formerly Sandy Bridge, recently upgraded to Haswell after my remarkably bad luck with CPU/mobo failures, second only to Gary's, struck again) continuing steadily on port 2000. Probably sometime in August I'll be resuming my CRUS contributions on port 1300.

mdettweiler 2015-07-26 05:00

Two primes, both found on port 2000 (14th drive):

[URL="http://primes.utm.edu/primes/page.php?id=120149"]643*2^1403415-1[/URL]
[URL="http://primes.utm.edu/primes/page.php?id=120150"]605*2^1404118-1[/URL]

gd_barnes 2015-08-06 19:52

529*2^1421561-1 is prime

Mini-Geek 2015-08-07 11:10

[URL="http://primes.utm.edu/primes/page.php?id=120201"]441*2^1422099-1 is Prime![/URL]

mdettweiler 2015-09-14 03:26

[url=http://primes.utm.edu/primes/page.php?id=120364]771*2^1409165-1[/url] is prime! (port 2000/14th drive)

mdettweiler 2015-10-03 20:23

[url=http://primes.utm.edu/primes/page.php?id=120419]723*2^1410870-1[/url] is prime! (port 2000/14th drive)

Mini-Geek 2015-10-27 12:02

[URL="http://primes.utm.edu/primes/page.php?id=120488"]429*2^1428961-1 (430163 digits)[/URL] is prime!

mdettweiler 2016-01-04 04:33

[url=http://primes.utm.edu/primes/page.php?id=120833]989*2^1418056-1[/url] is prime! (port 2000/14th drive)

mdettweiler 2016-01-10 23:57

[url=http://primes.utm.edu/primes/page.php?id=120872]805*2^1418871-1[/url] is prime! (port 2000/14th drive)

mdettweiler 2016-01-28 21:38

[url=http://primes.utm.edu/primes/page.php?id=120950]973*2^1420727-1[/url] is prime (port 2000/14th drive)

mdettweiler 2016-04-02 08:36

[url=http://primes.utm.edu/primes/page.php?id=121509]783*2^1425060-1[/url] is prime! (port 2000/14th drive)

mdettweiler 2016-05-05 18:29

[URL="http://primes.utm.edu/primes/page.php?id=121622"]653*2^1428280-1[/URL] is prime! (port 2000/14th drive)

mdettweiler 2016-07-19 07:08

[url=http://primes.utm.edu/primes/page.php?id=121914]957*2^1435600-1[/url] is prime! (port 2000/14th drive)

mdettweiler 2016-07-31 21:31

[url=http://primes.utm.edu/primes/page.php?id=121974]619*2^1436227-1[/url] is prime! (port 2000/14th drive)

mdettweiler 2016-08-11 02:49

[url=http://primes.utm.edu/primes/page.php?id=122013]993*2^1437131-1[/url] is prime! (port 2000/14th drive)

mdettweiler 2016-09-01 06:34

[url=http://primes.utm.edu/primes/page.php?id=122124]951*2^1438430-1[/url] is prime! (port 2000/14th drive)

mdettweiler 2016-09-06 04:23

[url=http://primes.utm.edu/primes/page.php?id=122166]685*2^1438521-1[/url] is prime! (port 2000/14th drive)

mdettweiler 2016-09-28 12:18

[url=http://primes.utm.edu/primes/page.php?id=122258]741*2^1441006-1[/url] is prime! (port 2000/14th drive)

Mini-Geek 2016-11-01 03:02

[URL="http://primes.utm.edu/primes/page.php?id=122454"]499*2^1434643-1[/URL] is prime!

mdettweiler 2016-11-29 06:18

Two primes from port 2000:

[url=http://primes.utm.edu/primes/page.php?id=122544]623*2^1445836-1[/url]
[url=http://primes.utm.edu/primes/page.php?id=122545]685*2^1446421-1[/url]

gd_barnes 2016-12-05 03:41

Henry,

You either found two real fast primes close together or you have another bad machine producing erroneous primes. Can you check on that?


Thanks,
Gary

henryzz 2016-12-05 17:12

[QUOTE=gd_barnes;448411]Henry,

You either found two real fast primes close together or you have another bad machine producing erroneous primes. Can you check on that?


Thanks,
Gary[/QUOTE]

Checking the primes. It is the same machine. I was certain that it was fixed after a bios update. Either I have been lucky or that isn't the case.
When I double checked the work on my own server(about a weeks work ~1000 tests) there were two mismatches(both wrong the first time before the bios update). Even then it was fairly stable.
I was watching amazon prime yesterday evening. It is possible that this is related to hardware decoding at the same time. Not certain that the times match up completely.

I might have to just keep this machine off public servers as the problem seems to be false primes.

Both "primes" tested composite with a prp test. This is getting frustrating. What sort of testing do I need to do to confirm that this pc is stable? The errors are so infrequent.

pepi37 2016-12-05 18:12

[QUOTE=henryzz;448474]Checking the primes. It is the same machine. I was certain that it was fixed after a bios update. Either I have been lucky or that isn't the case.
When I double checked the work on my own server(about a weeks work ~1000 tests) there were two mismatches(both wrong the first time before the bios update). Even then it was fairly stable.
I was watching amazon prime yesterday evening. It is possible that this is related to hardware decoding at the same time. Not certain that the times match up completely.

I might have to just keep this machine off public servers as the problem seems to be false primes.

Both "primes" tested composite with a prp test. This is getting frustrating. What sort of testing do I need to do to confirm that this pc is stable? The errors are so infrequent.[/QUOTE]
What is that two "primes"? ( if I may know)?

pinhodecarlos 2016-12-05 19:57

[QUOTE=pepi37;448483]What is that two "primes"? ( if I may know)?[/QUOTE]

I suppose these two:

1000000000:M:1:2:258
529 1440053
429 1440063

from

[URL]http://www.noprimeleftbehind.net/stats/index.php?content=port[/URL]

edit:
529*2^1440053-1 is not prime. LLR Res64: 3036F257192A31EA Time : 785.791 sec.
429*2^1440063-1 is not prime. LLR Res64: FF7F05B3A32F301C Time : 781.643 sec.

gd_barnes 2016-12-05 20:46

Yes those are the two "prime" composites that were reported to me.

Henry, would it be possible for you to post a list of tests done by that machine since the last time that you had the problem? We will attempt to delete the k/n pairs from the server and re-add them so that they can be retested. Thanks.

Batalov 2016-12-05 20:54

It's David, actually.

[SPOILER]"[I [B]am[/B] serious]...and stop calling me Shirley" (c) Airplane.[/SPOILER]

VBCurtis 2016-12-05 21:05

[QUOTE=Batalov;448515]It's David, actually.

[SPOILER]"[I [B]am[/B] serious]...and stop calling me Shirley" (c) Airplane.[/SPOILER][/QUOTE]

But it says to just call him Henry!

I mean, you could call me Mike if you wished, but folks would get confused.
-mike curtis

pepi37 2016-12-05 21:57

[QUOTE=VBCurtis;448517]But it says to just call him Henry!

I mean, you could call me Mike if you wished, but folks would get confused.
-mike curtis[/QUOTE]


So it look like same person has [SPOILER]few names[/SPOILER] :smile:

Batalov 2016-12-05 23:57

[QUOTE=VBCurtis;448517]But[B] it[/B] says to just call him Henry![/QUOTE]
That is exactly right![B] It[/B]. (Because it is not the users who write those [STRIKE]cursed[/STRIKE] cursive lines.)

As the old Soviet joke goes, "In [STRIKE]the USSR[/STRIKE] this forum, all is created for the man and all is for the love of man and for the sake of man ... And I [B]saw[/B] that man!!" :rolleyes:

henryzz 2016-12-06 01:15

It is all tests by me since tests were removed last time.
I am pretty certain 99+% of them are perfectly good. In fact I suspect I may be stable apart from when using hardware decoding(very rare). I have run several days stress testing and a successful gimps double check.
I would imagine it is more stable than some who have submitted pairs during races with distributed computing routes(overclocked pcs etc).
How accurate do we need?
I would be very interested in knowing the results of a doublecheck of the results returned by this pc.

Mini-Geek 2017-04-07 12:33

[URL="http://primes.utm.edu/primes/page.php?id=123261"]513*2^1452354-1 is prime![/URL]

mdettweiler 2017-04-15 08:27

[url=http://primes.utm.edu/primes/page.php?id=123285]617*2^1451432-1 is prime![/url]

The Prime Pages site warned me when I submitted that at the current rate primes are being added, this will be pushed off the list in about 40-50 or so weeks. Has anyone run the numbers to make sure we're staying ahead of that curve? (Ports 2000 and 9000 are tracking pretty close in [i]n[/i] right now and have similar resources on them, so they'll both be in the same boat.)

If need be, I can shift some resources over from CRUS 1400 to give one or both ports a boost. Right now I have 1 Haswell on 2000, and 4 more on 1400 (+2 Nehalems, but they don't count for much these days so I wouldn't bother moving them).

gd_barnes 2017-04-20 21:19

[QUOTE=mdettweiler;456780][URL="http://primes.utm.edu/primes/page.php?id=123285"]617*2^1451432-1 is prime![/URL]

The Prime Pages site warned me when I submitted that at the current rate primes are being added, this will be pushed off the list in about 40-50 or so weeks. Has anyone run the numbers to make sure we're staying ahead of that curve? (Ports 2000 and 9000 are tracking pretty close in [I]n[/I] right now and have similar resources on them, so they'll both be in the same boat.)

If need be, I can shift some resources over from CRUS 1400 to give one or both ports a boost. Right now I have 1 Haswell on 2000, and 4 more on 1400 (+2 Nehalems, but they don't count for much these days so I wouldn't bother moving them).[/QUOTE]

At position 2500 that seems unlikely. The calculation is likely done based on the number of digits in the 5000th prime. Since there are so many n=1290000 primes that it skews the calculation.

AMDave 2017-04-24 05:11

I expect it to be longer than that.

On the "[URL="http://www.noprimeleftbehind.net/stats/index.php?content=drive_progress"]Drive Progress[/URL]" chart, the red line shows the lower limit of the top 5000.
It is is updated daily based on an update from the top 5000 page.
It is actually a complex curve but it looks fairly straight on this scale.

Also on the "[URL="http://www.noprimeleftbehind.net/stats/index.php?content=prime_list"]Prime List[/URL]" page you will see the second line of the description currently says
"Last updated minimum size for the Top5000 database is 388342 digits."

This number of digits of the smallest prime in the top 5000 is updated daily at the same time as the red line on the chart.

HTH

Batalov 2017-04-24 07:06

[QUOTE=gd_barnes;457138]Since there are so many n=1290000 primes that it skews the calculation.[/QUOTE]
Not so many anymore. Used to be 2900, now less than 200 and shrinking, and in a couple of months they will be all gone from top5k, except those that were collected into AP[SUB]3[/SUB]s, the SG pair and the twin pair. I wonder if they will continue running them, just like they still run GFN"15"s.

_______________
"We choose to go to the [STRIKE]moon[/STRIKE] neighborhood mall not because it was hard, but because it was easy, because [STRIKE]that goal will serve to organize and measure the best of our energies and skills[/STRIKE] everyone gets a lolly!" (The new generation's modified and improved motto.)

Mini-Geek 2017-04-24 15:15

Added [URL="http://primes.utm.edu/primes/page.php?id=123312"]123312[/URL] : 413*2^1456498-1 (438453 digits)

gd_barnes 2017-05-03 23:46

Someone with a user name of juhehe found a top-5000 prime on port 9000 over a week ago and it has not been reported. If anyone knows how to contact him please let me know.

mdettweiler 2017-05-04 23:49

[QUOTE=gd_barnes;458240]Someone with a user name of juhehe found a top-5000 prime on port 9000 over a week ago and it has not been reported. If anyone knows how to contact him please let me know.[/QUOTE]
You can find his email address in the PRPnet log files for port 9000 at: [url]http://www.noprimeleftbehind.net/prpnet/results/[/url]

gd_barnes 2017-05-05 01:58

OK thanks. I sent him an Email.

Mini-Geek 2017-05-08 02:09

Added [URL="http://primes.utm.edu/primes/page.php?id=123352"]123352[/URL] : 591*2^1458622-1 (439092 digits)

mdettweiler 2017-05-10 14:54

[url=http://primes.utm.edu/primes/page.php?id=123359]843*2^1453392-1 is prime![/url]

Mini-Geek 2017-06-18 02:49

Added [URL="http://primes.utm.edu/primes/page.php?id=123548"]123548[/URL] : 527*2^1468300-1 (442006 digits)

odicin 2017-07-01 11:16

[COLOR=#000000][FONT=&quot]Added [/FONT][/COLOR][URL="http://primes.utm.edu/primes/page.php?id=123624"]123624[/URL][COLOR=#000000][FONT=&quot] : 765*2^1460683-1 (439713 digits)
[/FONT][/COLOR]

mdettweiler 2017-07-04 17:56

Two primes on port 9000 within an hour of each other, nicely breaking a slightly long dry streak of about n=10K:

Added [url=http://primes.utm.edu/primes/page.php?id=123649]123649[/url] : 545*2^1478786-1 (445162 digits)
Added [url=http://primes.utm.edu/primes/page.php?id=123650]123650[/url] : 559*2^1478821-1 (445173 digits)

odicin 2017-07-06 05:41

[COLOR=#000000][FONT=&quot]Added [/FONT][/COLOR][URL="http://primes.utm.edu/primes/page.php?id=123679"]123679[/URL][COLOR=#000000][FONT=&quot] : 347*2^2245598-1 (675995 digits)
[/FONT][/COLOR]

gamer007 2017-07-11 02:34

Added [URL="http://primes.utm.edu/primes/page.php?id=123730"]123730[/URL]: 567 *2^1484069-1 (446753 digits)

gamer007 2017-07-15 17:22

Added [URL="https://primes.utm.edu/primes/page.php?id=123745"]123745[/URL]: 477*2^1489922-1 (448514 digits)

mdettweiler 2017-07-17 18:17

Three primes in the last few days:

Port 9000:
[URL="http://primes.utm.edu/primes/page.php?id=123753"]527*2^1489120-1[/URL]
[URL="http://primes.utm.edu/primes/page.php?id=123755"]595*2^1494593-1[/URL]

Port 2000:
[URL="http://primes.utm.edu/primes/page.php?id=123754"]955*2^1463821-1[/URL]

Mini-Geek 2017-07-29 20:52

Added [URL="http://primes.utm.edu/primes/page.php?id=123785"]123785[/URL] : 551*2^1501694-1 (452058 digits)

Mini-Geek 2017-08-08 12:08

Added [URL="http://primes.utm.edu/primes/page.php?id=123824"]123824[/URL] : 465*2^1504138-1 (452794 digits)

odicin 2017-08-09 07:20

[COLOR=#000000][FONT=&quot]Added [/FONT][/COLOR][URL="http://primes.utm.edu/primes/page.php?id=123828"]123828[/URL][COLOR=#000000][FONT=&quot] : 759*2^1468175-1 (441968 digits)
[/FONT][/COLOR]

Batalov 2017-08-13 14:24

[QUOTE=Batalov;457372]Not so many anymore. Used to be 2900, now less than 200 and shrinking, and in a couple of months they will be all gone from top5k, except those that were collected into AP[SUB]3[/SUB]s, the SG pair and the twin pair. I wonder if they will continue running them, just like they still run GFN"15"s.

_______________
"We choose to go to the [STRIKE]moon[/STRIKE] neighborhood mall not because it was hard, but because it was easy, because [STRIKE]that goal will serve to organize and measure the best of our energies and skills[/STRIKE] everyone gets a lolly!" (The new generation's modified and improved motto.)[/QUOTE]
Alas (for the YGG), the 1290000-bit boundary is now in the past.

And this last of the Mohicans ought to be one the shortest-lived Top5000 primes!
[URL]http://primes.utm.edu/primes/page.php?id=123838[/URL]
[CODE]Entrance Rank (*): 5000
Currently on list? (*): no
Submitted: 8/12/2017 21:33:22 CDT
Removed (*): 8/12/2017 21:53:07 CDT[/CODE]

gd_barnes 2017-08-13 16:11

[QUOTE=Batalov;465434]Alas (for the YGG), the 1290000-bit boundary is now in the past.

And this last of the Mohicans ought to be one the shortest-lived Top5000 primes!
[URL]http://primes.utm.edu/primes/page.php?id=123838[/URL]
[CODE]Entrance Rank (*): 5000
Currently on list? (*): no
Submitted: 8/12/2017 21:33:22 CDT
Removed (*): 8/12/2017 21:53:07 CDT[/CODE][/QUOTE]

Excellent! It's nice to have their distorting presence gone.

pepi37 2017-08-13 17:06

To make the top 5000 [I]today[/I] a prime must have [B]388365[/B] digits or meet the size requirements for it's archivable form.
:max:

Batalov 2017-08-13 20:16

[QUOTE=pepi37;465446]To make the top 5000 [I]today[/I] a prime must have [B]388365[/B] digits or meet the size requirements for its archivable form.
[/QUOTE]
Even [URL="http://primes.utm.edu/primes/page.php?id=119628"]a 1017-digit prime[/URL] can be archivable, ...and believe me - it is going to stay in the short list for quite a while. :cool:

pepi37 2017-08-13 20:48

[QUOTE=Batalov;465448]Even [URL="http://primes.utm.edu/primes/page.php?id=119628"]a 1017-digit prime[/URL] can be archivable, ...and believe me - it is going to stay in the short list for quite a while. :cool:[/QUOTE]

Ah, special types of primes :smile: :razz:

mdettweiler 2017-09-12 13:45

[URL="http://primes.utm.edu/primes/page.php?id=123889"]741*2^1472086-1 is prime![/URL]

juhehe 2017-09-23 22:53

[QUOTE=gd_barnes;458240]Someone with a user name of juhehe found a top-5000 prime on port 9000 over a week ago and it has not been reported. If anyone knows how to contact him please let me know.[/QUOTE]

I noticed the prime too, admittedly some months ago.
I have to go and try to properly report it, I hope it is still possible.

We have exchanged a few emails already back in April the 1st, 2012 :)

gd_barnes 2017-09-25 05:13

[QUOTE=juhehe;468458]I noticed the prime too, admittedly some months ago.
I have to go and try to properly report it, I hope it is still possible.

We have exchanged a few emails already back in April the 1st, 2012 :)[/QUOTE]

That was 4 months ago. I responded to your PM about how to transfer the prime.

juhehe 2017-09-25 18:56

[QUOTE=gd_barnes;468514]That was 4 months ago. I responded to your PM about how to transfer the prime.[/QUOTE]

Thanks for holding the prime for me for the summer!

MyDogBuster 2017-09-29 05:40

675* 2^1476887-1 is prime

[URL]http://primes.utm.edu/primes/page.php?id=123912[/URL]

My first NPLB prime in 39 months

MiHost 2017-09-30 04:18

Added [URL="http://primes.utm.edu/primes/page.php?id=123915"]123915[/URL] : 867*2^1477169-1 (444676 digits)

MiHost 2017-10-10 19:23

Added [URL="http://primes.utm.edu/primes/page.php?id=123939"]123939 [/URL]: 923*2^1480444-1 (445662 digits)

The following warnings have been noted:

At the rate at which primes have been added to this list in the past, the 445662 digit prime "923*2^1480444-1" may only be on the list for about 44 weeks.

MyDogBuster 2017-10-12 22:12

[URL="http://primes.utm.edu/primes/page.php?id=123944"]http://primes.utm.edu/primes/page.php?id=123944 [/URL]

445764 digits
[URL="http://primes.utm.edu/primes/page.php?id=123944"][/URL]

Mini-Geek 2017-10-16 21:31

[url]http://primes.utm.edu/primes/page.php?id=123945[/url]
449*2^1516108-1 is a prime with 456397 digits.

MyDogBuster 2017-10-26 05:54

[B]627*2^1482485-1 is prime[/B]

[URL]http://primes.utm.edu/primes/page.php?id=123958[/URL]

446276 digits

MiHost 2017-10-30 22:38

Added [URL="http://primes.utm.edu/primes/page.php?id=123975"]123975[/URL] : 345*2^2313720-1 (696502 digits)

gd_barnes 2017-11-01 06:18

Nice prime! :smile:

Mini-Geek 2017-11-12 14:10

Added [URL="http://primes.utm.edu/primes/page.php?id=123987"]123987[/URL] : 541*2^1519465-1 (457408 digits)

mdettweiler 2017-11-22 20:10

Two primes from port 2000:

Added [URL="http://primes.utm.edu/primes/page.php?id=124015"]124015[/URL] : 829*2^1484633-1 (446922 digits)
Added [URL="http://primes.utm.edu/primes/page.php?id=124016"]124016[/URL] : 801*2^1486133-1 (447374 digits)

odicin 2017-12-17 22:07

[COLOR=#000000][FONT=&quot]Added [/FONT][/COLOR][URL="http://primes.utm.edu/primes/page.php?id=124064"]124064[/URL][COLOR=#000000][FONT=&quot] : 339*2^2336421-1 (703336 digits)
[/FONT][/COLOR]

mdettweiler 2017-12-22 21:26

Added [URL="http://primes.utm.edu/primes/page.php?id=124076"]124076[/URL] : 683*2^1491446-1 (448973 digits)

MyDogBuster 2018-01-06 16:57

Added [URL="http://primes.utm.edu/primes/page.php?id=124107"]124107[/URL]

745*2^1494273-1 is prime 449824 digits

mdettweiler 2018-01-22 22:12

A couple primes that my machines piled up while I wasn't watching them too closely:

Added [URL="http://primes.utm.edu/primes/page.php?id=124166"]124166[/URL] : 975*2^1493869-1 (449703 digits)
Added [URL="http://primes.utm.edu/primes/page.php?id=124167"]124167[/URL] : 703*2^1494427-1 (449871 digits)

MyDogBuster 2018-01-23 14:48

Added [URL="http://primes.utm.edu/primes/page.php?id=124170"]124170[/URL]

855*2^1498084-1 (450972 digits)
[URL="http://primes.utm.edu/primes/page.php?id=124170"][/URL]

MyDogBuster 2018-01-24 18:08

Added [URL="http://primes.utm.edu/primes/page.php?id=124173"]124173[/URL] : 837*2^1498329-1 (451045 digits)

MyDogBuster 2018-02-07 16:05

Added [URL="http://primes.utm.edu/primes/page.php?id=124285"]124285 :[/URL]691*2^1500869-1 (451810 digits)

mdettweiler 2018-02-10 21:04

Looks like I just re-discovered a prime on port 2000 that was previously picked up by the Free-DC Prime Search eight years ago:

[URL="http://primes.utm.edu/primes/page.php?id=92576"]907*2^1501169-1[/URL]

Does anyone know what ranges they searched in this area? My understanding is that they weren't intending to do a comprehensive search (just to find some primes), so we might be in for some hit-or-miss in the near future.

pinhodecarlos 2018-02-10 21:14

That has been an individual search by Burt not related with Free-DC drives, just the knowledge on the finding to FreeDC account.

gd_barnes 2018-02-11 05:19

See the first post of the 14th drive. There are only 2 more known primes after this one for k=600-1001 n=1.5M-2M. So you found a rarity.

The 13th drive has only one more known prime for k=400-600 n=1.5M-2M.

So not much hit-and-miss. :-)

MiHost 2018-02-27 17:43

Added [URL="http://primes.utm.edu/primes/page.php?id=124476"]124476[/URL] : 305*2^2358854-1 (710089 digits)

gd_barnes 2018-03-05 07:29

Looks like there are two top-5000 primes yet to report from 6 days ago. One from Max and one from Sashixi.

Interestingly there were 3 primes found within 2 hours of each other on Feb. 27th; by 3 different people. :smile:

mdettweiler 2018-03-08 08:05

[QUOTE=gd_barnes;481611]Looks like there are two top-5000 primes yet to report from 6 days ago. One from Max and one from Sashixi.

Interestingly there were 3 primes found within 2 hours of each other on Feb. 27th; by 3 different people. :smile:[/QUOTE]
And here's mine, belatedly:

[url=http://primes.utm.edu/primes/page.php?id=124503]691*2^1503141-1[/url]


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