mersenneforum.org  

Go Back   mersenneforum.org > Prime Search Projects > Conjectures 'R Us

Reply
 
Thread Tools
Old 2007-12-21, 07:17   #23
em99010pepe
 
em99010pepe's Avatar
 
Sep 2004

2·5·283 Posts
Default

When I free up some machines (7 cores, 1 already working) I'll put them on here to give you guys a little boost....
em99010pepe is offline   Reply With Quote
Old 2007-12-21, 08:33   #24
gd_barnes
 
gd_barnes's Avatar
 
May 2007
Kansas; USA

23×5×263 Posts
Default

Quote:
Originally Posted by Citrix View Post
Gary, Could we have a separate webpage for powers of 2. I think these will be the most popular.
By the way the webpage looks really nice.
Quote:
Originally Posted by Siemelink View Post
Hi Gary,

All your coordination effort is really nice. I checked out the webpages, they are solid stuff. I just had one minor thought, is it possible to keep the headers of the table in view when scrolling down?
Laters, Willem
A follow-up on these requests. After thinking about the powers of 2 request, I think it as well as the headers request are good ideas. I'm a bit of a newb at HTML and it is very strange attempting to keep the headers on when scrolling down. After getting a response from Karsten (Kar_bon) on how to do that, I should be able to do it. I'll work on both of these later this weekend.

FYI, I've analyzed powers of 2 up to 256 now. The conjectures on base 64 are low at k=14 and k=51 and were easily proven. On base 128, they're low with both at k=44 but I wasn't able to quite prove them. Riesel had one k remaining at n=5K. Sierp had 4 k's remaining at n=40K (searched to n=5K and converted higher ones from base 2) but 3 of them cannot be proven for the same reason as k=4 on Sierp base 32. So no good for those.

I think that base 256 may be the next power of 2 effort after bases 4 and 16. It has a Riesel conjecture of k=10364 and a Sierp conjecture of k=1221. Sierp's is a little low but Riesel may yield some k's to search very high. Ultimately I'll check it to base 1024 or possibly 4096 but I see no reason to go any higher. There may not be any that are good > base 256.

Based on almost split poll results, I think it may make sense to simultaneously do some powers of 2 while continuing to fill in bases <= 32.

Although there isn't a separate page for powers of 2 yet, I will add base 64 in just a little while and add base 128 later today (Friday) on the current pages.

If you haven't voted on the direction of the effort yet, get your voice heard! It is the poll in this forum. It's not public so I have no idea how people vote.


Gary
gd_barnes is online now   Reply With Quote
Old 2007-12-21, 08:42   #25
gd_barnes
 
gd_barnes's Avatar
 
May 2007
Kansas; USA

244308 Posts
Default

Quote:
Originally Posted by em99010pepe View Post
When I free up some machines (7 cores, 1 already working) I'll put them on here to give you guys a little boost....
Hah! A LITTLE boost! Everyone, with a couple of new quads running 50% faster than anything I have, this guy eats sieved files for lunch and dinner too!

I'll see if I can get some sieving going on for ~45-50 of the base 16 k's this weekend as the beginning of a team effort. I want to save a few for individual efforts. I think he said it'd be ~2 weeks before the other cores free up.


Gary
gd_barnes is online now   Reply With Quote
Old 2007-12-21, 14:48   #26
tcadigan
 
tcadigan's Avatar
 
Sep 2004
UVic

1068 Posts
Default

Quote:
Originally Posted by gd_barnes View Post
Great, we'll reserve it for you. And thanks for sharing your sieved file. I know of a person who might want to work on it for a little while. Would you be OK with that or is your break from it temporary? Since it's officially the 'Sierpinski Base 4' project, I would inform him to report it as such if he found a prime.

...

Edit: You may want to post your break from Sierp Base 4 in that thread also. Alternatively if you and Jean Penne prefer to abandon that thread and report statuses here, that works for us and saves me from having to check it occassionally. If you both agree, I'll just have Citrix lock the thread after a period of time.


Gary
let'em have at it! I'd be more interested in seeing it fall to finding a prime than selfishly holding onto it.

as for the thread closure...I'm fine either way. I'd just want to make sure that the files don't get lost along the way. I think there's relatively recent newpgen's for all k's and even 2 different dats attached throughout the thread (1 for original search, 1 for expanded search)
tcadigan is offline   Reply With Quote
Old 2007-12-21, 21:27   #27
gd_barnes
 
gd_barnes's Avatar
 
May 2007
Kansas; USA

23·5·263 Posts
Default Releasing Sierp base 11 and Sierp base 23

I have completed testing the one k remaining on Sierp base 11 to n=100K and the two k's remaining on Sierp base 23 to n=60K. They are now released for testing.

Carlos, Willem, or whomever wants to test Sierp base 23 further, I'm attaching the remainder of my sieved file up to n=100K to this post. It's well sieved to P=600G.


Gary
Attached Files
File Type: txt sieve-sierp-base23-060K-100K.txt (10.8 KB, 366 views)
gd_barnes is online now   Reply With Quote
Old 2007-12-21, 22:44   #28
Siemelink
 
Siemelink's Avatar
 
Jan 2006
Hungary

22·67 Posts
Default

Quote:
Originally Posted by gd_barnes View Post
I have completed testing the one k remaining on Sierp base 11 to n=100K and the two k's remaining on Sierp base 23 to n=60K. They are now released for testing.

Carlos, Willem, or whomever wants to test Sierp base 23 further, I'm attaching the remainder of my sieved file up to n=100K to this post. It's well sieved to P=600G.


Gary
Yeah, that's for me. I started it yesterday already at 60k. I am now off for the holidays so I wonder what I'll find when I return.

Laters, Willem.
Siemelink is offline   Reply With Quote
Old 2007-12-21, 23:57   #29
gd_barnes
 
gd_barnes's Avatar
 
May 2007
Kansas; USA

23×5×263 Posts
Default

Quote:
Originally Posted by Siemelink View Post
Yeah, that's for me. I started it yesterday already at 60k. I am now off for the holidays so I wonder what I'll find when I return.

Laters, Willem.

Very good. Got ya down. Maybe you'll find a top-5000 prime when you return! n>=73.7K would do it for base 23.

Note for everyone: As you probably well know, this is not an official prime-search project so any top-5000 prime correctly reported should not include a project ID.


Gary
gd_barnes is online now   Reply With Quote
Old 2007-12-22, 07:33   #30
sjtjung
 
sjtjung's Avatar
 
Mar 2006
Columbus, OH

7·11 Posts
Default

I would like to reserve 706 for base 27 to at least n= 50k. I might continue working on it.


-Steven
sjtjung is offline   Reply With Quote
Old 2007-12-23, 19:19   #31
tcadigan
 
tcadigan's Avatar
 
Sep 2004
UVic

2×5×7 Posts
Default

7773*2^199784+1 is prime! Time: 213.884 sec.

i.e.
7773*16^49946+1
60145 digits

I'll try my 6663 to 100K next

Last fiddled with by gd_barnes on 2010-05-16 at 07:12
tcadigan is offline   Reply With Quote
Old 2007-12-24, 03:14   #32
gd_barnes
 
gd_barnes's Avatar
 
May 2007
Kansas; USA

244308 Posts
Default

Quote:
Originally Posted by sjtjung View Post
I would like to reserve 706 for base 27 to at least n= 50k. I might continue working on it.

-Steven
Great! Got you down.

Quote:
Originally Posted by tcadigan View Post
7773*2^199784+1 is prime! Time: 213.884 sec.

i.e.
7773*16^49946+1
60145 digits

I'll try my 6663 to 100K next

Good find. Our first n > 25K for the effort! 56 k's to go base 16.

Edit: I tried moving these into the new 'report primes here' thread that I just now created but it put them before the main post since they were written earlier. So I'll just leave them here. Please report all future primes in that thread...sorry that it wasn't created earlier.


Gary

Last fiddled with by gd_barnes on 2007-12-24 at 03:53
gd_barnes is online now   Reply With Quote
Old 2007-12-24, 15:44   #33
michaf
 
michaf's Avatar
 
Jan 2005

479 Posts
Default

I think I forgot to report here, it's close to being done to n=10000 now

Quote:
Originally Posted by michaf View Post
I'm running Sierpinski base 24 upto n=5000 now.
I'll report here when it's done
michaf is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Bases 101-250 reservations/statuses/primes gd_barnes Conjectures 'R Us 930 2021-10-18 06:30
Bases 501-1030 reservations/statuses/primes KEP Conjectures 'R Us 3972 2021-10-15 19:25
Bases 251-500 reservations/statuses/primes gd_barnes Conjectures 'R Us 2343 2021-10-12 16:37
Riesel base 3 reservations/statuses/primes KEP Conjectures 'R Us 1125 2021-09-23 22:51
Bases 33-100 reservations/statuses/primes Siemelink Conjectures 'R Us 1700 2021-09-18 19:07

All times are UTC. The time now is 03:41.


Tue Oct 19 03:41:58 UTC 2021 up 87 days, 22:10, 0 users, load averages: 2.04, 1.82, 1.78

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.