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-   -   Riesel base 3 reservations/statuses/primes (https://www.mersenneforum.org/showthread.php?t=11151)

KEP 2008-09-29 14:48

[QUOTE=em99010pepe;144012]KEP,

Got your email but I thought I was only going to PRP the candidates like the mini-drive and not generation the file and sieve. I'll stay with Sierp Base 6 mini-drive.

Carlos[/QUOTE]

Just to confirm, and to let everyone know: I accept your unreservation. It really werent extra work for me, so no harm done :smile: But if you feel like wanna take out some big ranges, you're more than welcome back at any given time :smile:

But for now I'll see when I can continue do more work on Riesel base 3, on my own... maybe in a month or a couple of years, who knows what I decide once I complete the work I've left as reserved...

KEP

gd_barnes 2008-09-30 07:29

Carlos,

I think Micha indicated an interest in sieving Riesel base 3 k<100M for n=25K-100K. If he's working on that, I'll create a mini-drive out of that base when he's done sieving to n=~100G or so.

If he's not working on it, I'll start some sieving on it next week.


Gary

gd_barnes 2008-10-05 03:03

KEP reported by Email that he has completed Riesel base 3 up to k=250M and n=25K on Oct. 1st!

The effort was reviewed and is correct. Very nice work! There are now 1178 k's remaining for k<250M.

The web pages have now been updated for all reservations, search ranges, and primes at CRUS in the last week.


Gary

gd_barnes 2008-10-05 03:05

Micha confirmed by PM that he is sieving Riesel base 3 for k<100M and n=25K-100K. After he has sieved to an appropriate depth, I'll start a mini-drive for n=25K-50K.


Gary

henryzz 2008-10-05 07:19

3677878 and 4223272 have reached 100k with no primes:cry:
i am unreserving them
2/5 numbers i have tested have had a prime

gd_barnes 2008-10-05 07:40

[quote=henryzz;144518]3677878 and 4223272 have reached 100k with no primes:cry:
i am unreserving them
2/5 numbers i have tested have had a prime[/quote]

Cool. Thanks for the update and testing those. Eliminating 40-50% of k's for n=25K-100K is close to what I would except.

Feel free to take the next 2-3 of them or grab a file from the Sierp mini-drive. n=1K files posted are now posted there for n=85K-100K.


Gary

KEP 2008-10-05 14:12

I would like to reserve k<=5M up to 1M for Riesel base 3. I'm still keeping my other reservations, but I feels like I wanna be part of finding bigger primes. Already now it appears to be rather easy sieveable, so I'll sieve the 3 k's untill my Sierp base 19 reservation is completed and then I'll pause any else I've pending and work on this recent Riesel base 3 reservation :smile:

Hope its ok :smile:

KEP

EDIT: Just for clearence, I'm keeping all currently reserved work, but would like to add this to my list of reservations :smile:

gd_barnes 2008-10-06 08:26

[quote=KEP;144550]I would like to reserve k<=5M up to 1M for Riesel base 3. I'm still keeping my other reservations, but I feels like I wanna be part of finding bigger primes. Already now it appears to be rather easy sieveable, so I'll sieve the 3 k's untill my Sierp base 19 reservation is completed and then I'll pause any else I've pending and work on this recent Riesel base 3 reservation :smile:

Hope its ok :smile:

KEP

EDIT: Just for clearence, I'm keeping all currently reserved work, but would like to add this to my list of reservations :smile:[/quote]


OK, that's fine. As prime as base 3 is, I would expect you to find a prime on all of them before n=1M. Good luck on finding a top-5000 prime! :smile:


Gary

KEP 2008-10-06 14:29

[QUOTE=gd_barnes;144611]OK, that's fine. As prime as base 3 is, I would expect you to find a prime on all of them before n=1M. Good luck on finding a top-5000 prime! :smile:


Gary[/QUOTE]

Thanks!

At 151,700,000,000 p ~43,331 candidates remain.

If a top5000 candidate exists I'll catch it, no doubt about it :smile:

Kenneth!

KEP 2008-10-13 16:04

3591446*3^191177-1 is prime... only 2 to go :smile:

gd_barnes 2008-10-13 22:20

[quote=KEP;145280]3591446*3^191177-1 is prime... only 2 to go :smile:[/quote]


VERY nice! 91222 digits. Not far from top-5000 territory.

Historical note: This is the 6th largest prime ever found for Riesel base 3!!:george:

k=3677878 is now the lowest k with no prime for this base.


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