513*2^625011-1 is prime!
This was from port 4000 found a couple of days ago. Gary noticed I missed seeing it. Thanks.

985*2^622033-1 is prime (Range)

473*2^626184-1 is prime

399*2^768439-1 is prime

835*2^627477-1 is prime

869*2^629516-1 is prime

861*2^630463-1 is a confirmed prime

595*2^629757-1 is prime

885*2^631004-1 is a confirmed prime

367*2^834573-1 is prime

987*2^631666-1 is prime

855*2^632791-1 is prime

845*2^633390-1 is prime

Well...all that I had to do was comment that all the quads on port 4000 weren't yielding a prime while one quad on port 8000 had yielded several primes and out pops a prime for port 4000:

503*2^634134-1 is prime


:smile: Gary

405*2^634608-1 is confirmed prime
507*2^638296-1 is prime

843*2^636955-1 is prime

845*2^637848-1 is prime

The first prime from the 6k mini-drive:

315*2^613854-1 is prime

[quote=gd_barnes;163606]The first prime from the 6k mini-drive:

315*2^613854-1 is prime[/quote]
has it started then?
i haven't seen any posts about it today

[quote=henryzz;163608]has it started then?
i haven't seen any posts about it today[/quote]


That's because it has been going for almost a week. See [URL="http://www.mersenneforum.org/showpost.php?p=162544&postcount=207"]here[/URL] and [URL="http://www.mersenneforum.org/showpost.php?p=162552&postcount=208"]here[/URL] in the individual-k thread.

It's not a formal drive so there is no separate thread. It's just part of the individual-k drive.


Gary

893*2^639440-1 is prime

From the 6k mini-drive:

321*2^628734-1 is prime

861*2^645393-1 is a confirmed prime

321*2^650818-1 is prime

849*2^646968-1 is prime

315*2^659232-1 is new prime!

PS: 6 k's, 4 primes from only 2 k's: 315 and 321!

805*2^647277-1 is prime

921*2^647991-1 is prime

321*2^666797-1 is prime

Only k=315 and 321 seem to be able to score from the 6k drive. That's 3 for k=321 and 2 for k=315.


Gary

829*2^649149-1 is prime

383*2^608340-1 is prime

321*2^682493-1 is prime

The trend continues on the 6k drive: For k=315/321/327/333/339/345, that's 4 primes for k=321, 2 primes for k=315, and none for the others.

381*2^618929-1 is prime

915*2^652353-1 is a confirmed prime

After an extremely long dry spell on the 5th drive:

533*2^656000-1 is prime


The last prime was at n=~638K. I counted 7 primes for the 7th drive between the 5th drive's last prime at n=~638K and the 7th drive's current search limit, which is nearing 653K.


Gary

905*2^652908-1 is prime

459*2^657272-1 is prime

375*2^639621-1 is prime

573*2^657807-1 is prime (new) :grin:

801*2^655362-1 is prime

breaking the rule for the 6k team effort:

333*2^710678-1 is prime, the first non-315/321-prime!

Oh, yes!
Getting up there into the sweet spot.

That's 213,938 digits taking 3rd place overall in the Automated NPLB stats.
Well done!

319*2^671009-1 is prime

319*2^629783-1 is prime

815*2^658632-1 is prime

next prime for 6k-effort:

333*2^717510-1

only ~7000 after last prime for k=333!

893*2^659586-1 is prime

[QUOTE=MyDogBuster;166415]893*2^659586-1 is prime[/QUOTE]

In the top 10 as our 7th largest and a new PB for you :bow:

[QUOTE]In the top 10 as our 7th largest and a new PB for you :bow: [/QUOTE]

Hopefully by the time we finish Drives 5, 6, & 7 we can have many PB's for everyone. They are getting harder to find in these upper ranges.

325*2^650493-1 is prime

385*2^654349-1 is prime

At last, another prime on the quite barren 5th drive:

563*2^664568-1 is prime

937*2^662181-1 is prime

The extraordinaly long barren range for new primes continues on the 6th drive:

705*2^630007-1 is confirmed prime

No new primes since n=~618K. Bleh.

875*2^663162-1 is prime

from my reservation of individual k's for n=600k-620k:

363*2^612291-1 is new prime

825*2^665464-1 is a confirmed prime

979*2^667087-1 is prime

929*2^667460-1 is prime

383*2^736876-1 is prime

Breaking a long drought for new primes on the 6th drive:

733*2^632387-1 is prime

Edit: Karsten, I just noticed this: This is the 5th lowest weight k in the 6th drive and its first prime since n=272251! Interestingly for its weight of just 407, it now has a surprisingly large # of primes: 13.


Gary

375*2^717884-1 is prime

After a nearly n=14K range without a new prime in the 6th drive, it scores its 2nd one in an n=1500 range:

777*2^633901-1 is prime

Primes are, oh wait, you've heard it.

601*2^635375-1 is prime

849*2^673024-1 is prime

871*2^673565-1 is prime (202767 digits)

917*2^673570-1 is prime (202768 digits)

2 by 2 they come - Nice

[QUOTE=MyDogBuster;171005]871*2^673565-1 is prime (202767 digits)

917*2^673570-1 is prime (202768 digits)

2 by 2 they come - Nice[/QUOTE]
Only n=5 apart! Wow! :shock:

Gary, is this a new record?

[quote=mdettweiler;171022]... is [n=5] a new record?[/quote]
I don't recall precisely, but I don't think so. I'm pretty sure that there's some that are n=0 to 2 apart. Still an extremely close pair, though, congrats! :smile:

look here [url]http://www.mersenneforum.org/showpost.php?p=153718&postcount=2[/url] for a small summary of different k-values with near n-values.

that last pair is quite remarkable and i think i have to update the summary the next days!

[quote=Mini-Geek;171055]I don't recall precisely, but I don't think so. I'm pretty sure that there's some that are n=0 to 2 apart. Still an extremely close pair, though, congrats! :smile:[/quote]

Yes it is a Riesel record for k<=1001 and n>600K according to Karsten's list in the link that he posted.

Here's one for one of the most prolific k's 300<k<=1001:

741*2^640175-1 is prime

371*2^773762-1 is prime

385*2^771627-1 is prime

Added 87961 : 417*2^667878-1 (201054 digits)

699*2^642289-1 is prime

783*2^643146-1 is prime

The 6th drive is popping them out now:

797*2^644220-1 is prime


It looks like Vaughan has one also from that drive.

Added 87986 : 609*2^644181-1 (193921 digits)

607*2^644861-1 is prime

Already in database 82602 : 465*2^668701-1

If this is in the wrong thread, feel free to move it.
This one came from Port 4000.

May I make a suggestion?
Please put the port #### in the title of the thread so I know which thread I should be putting these in.
I still can't make heads or tails out of the thread titles the way they are.

Admin edit: Moved to this thread and the ports added to the 1st line in the 1st post of each thread.

Added 88006 : 717*2^645897-1 (194438 digits)

Since it appears that we don't have an Email address for SazanEyes, I have sent him a PM about a prime that he found on the 5th drive.

It's nice to see us picking up more k<800 primes now. We've definitely needed to push our 5th and 6th drives a little. :smile:

Did you look to see if he's registered on the NPLB Forum?
If so, the email addy would be there. :)

[quote=IronBits;172104]Did you look to see if he's registered on the NPLB Forum?
If so, the email addy would be there. :)[/quote]
Yep, he's registered there. :smile:

Found it, copy and pasted into the database so the auto-notify emailer can do it's thing. :wink:

493*2^669151-1 is prime (201438 digits)

My first prime! I submitted it to the top 5000 site.

Congratulations! May you find many many more. :smile:

[QUOTE]493*2^669151-1 is prime (201438 digits)

My first prime! I submitted it to the top 5000 site.
[/QUOTE]

Nice job all around. The Top 5000 entry looks perfect. Thats a pretty big prime for being the first.

after 6 weeks without any primes the next one for the 6k's 'drive':

333*2^783927-1 is prime!

(the 2nd largest found via LLRnet so far!)

stats now:

n=600k to 784k:

2 primes for k=315
3 primes for k=333
4 primes for k=321
no primes for k=327, 339, 345!

Added 88070 : 741*2^649621-1 (195559 digits)

Added 88071 : 793*2^649747-1 (195597 digits)

Added 88085 : 597*2^672336-1 (202397 digits)

Already in database 85082 : 615*2^651041-1

881*2^678138-1 is prime

Added 88098 : 649*2^652103-1 (196306 digits)

759*2^651993-1 is prime