Low weight stats page.

jocelynl · 2004-08-20, 14:51

Since <300k is almost completed, I would like to set up a page on low weight candidates of the form k*2^n-1 . If you could just tell me what work you have done on these. It would be nice not to duplicate work.

Joss

Kosmaj · 2004-08-23, 10:47

I haven't done any work on low-weight k's but I was thinknig to propose that we process one real but small 15k to 1M like k=15, 45, 75 or 105. After sieving such k's produce too many candidates for a single cruncher to process, but potentially they hide a good deal of primes so if we do it together there are good chances that many of us will find a large prime. With the latest LLR-P4 I think it can be done in a reasonable amount of time. What do you say?

jocelynl · 2004-08-23, 15:58

I guess Mark could set up a team for some low 15k like he has done with 210885 and 2995125705. With the new LLRP-4, k=15 seems a good choice. Robert has been working on it for some times. We should ask him for team work first.

Joss

jocelynl · 2004-09-02, 10:44

This is our first top5000 prime on Low Weight Candidate
3817*2^218917-1
It's a start!

Joss

Thomas11 · 2004-11-16, 19:54

I'm just announcing the find of two (big) primes of low weight k:

209826493*2^1140855-1 (ranking at position 50 of the Top-5000!)
209826493*2^1071303-1 (found a few months earlier)

-- Thomas L10

Templus · 2004-11-16, 21:09

Wow thomas!!

Congratulations on your 2 big primes!!!! Good work!!!!

jocelynl · 2004-11-17, 17:53

These should had some weight to our project!
Great work

Thomas

!

Joss

Thomas11 · 2004-12-12, 15:35

How about another big one?

80857169*2^1251076-1 is prime!

-- Thomas L10

jocelynl · 2004-12-12, 19:51

Wow!

rank 37, whooo now we're talking.

congratulation

Joss

Kosmaj · 2004-12-18, 16:15

Thomas, congrats any many huge primes!

BTW, can I reserve one k, just to try? I'm not sure how to read the table at the status page but if available I'd like to take k=32537227. It has no available data so I assume it's available(?) Can one reserve k's with some associated date in the table and/or provided sieve file?

Thanks and good luck!

jocelynl · 2004-12-18, 17:17

Hi Kosmaj,

k=32537227 is all yours
I don't have any sieve file for it
It's not a very low weight at 2100 n's left at 20M but still a good choice.

Joss

2004-08-20, 14:51	#1
jocelynl Sep 2002 100000110₂ Posts	Low weight stats page. Since <300k is almost completed, I would like to set up a page on low weight candidates of the form k2^n-1 . If you could just tell me what work you have done on these. It would be nice not to duplicate work. Joss Last fiddled with by jocelynl on 2004-08-21 at 12:16*

2004-12-18, 16:15	#10
Kosmaj Nov 2003 2×1,811 Posts	Thomas, congrats any many huge primes! BTW, can I reserve one k, just to try? I'm not sure how to read the table at the status page but if available I'd like to take k=32537227. It has no available data so I assume it's available(?) Can one reserve k's with some associated date in the table and/or provided sieve file? Thanks and good luck! Last fiddled with by Kosmaj on 2004-12-18 at 16:34

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2004-08-23, 10:47	#2
Kosmaj Nov 2003 2·1,811 Posts	I haven't done any work on low-weight k's but I was thinknig to propose that we process one real but small 15k to 1M like k=15, 45, 75 or 105. After sieving such k's produce too many candidates for a single cruncher to process, but potentially they hide a good deal of primes so if we do it together there are good chances that many of us will find a large prime. With the latest LLR-P4 I think it can be done in a reasonable amount of time. What do you say?

2004-08-23, 15:58	#3
jocelynl Sep 2002 2×131 Posts	I guess Mark could set up a team for some low 15k like he has done with 210885 and 2995125705. With the new LLRP-4, k=15 seems a good choice. Robert has been working on it for some times. We should ask him for team work first. Joss

2004-09-02, 10:44	#4
jocelynl Sep 2002 106₁₆ Posts	This is our first top5000 prime on Low Weight Candidate 3817*2^218917-1 It's a start! Joss

2004-11-16, 19:54	#5
Thomas11 Feb 2003 1920₁₀ Posts	I'm just announcing the find of two (big) primes of low weight k: 2098264932^1140855-1 (ranking at position 50 of the Top-5000!) 2098264932^1071303-1 (found a few months earlier) -- Thomas L10

2004-11-16, 21:09	#6
Templus Jun 2004 106₁₀ Posts	Wow thomas!! Congratulations on your 2 big primes!!!! Good work!!!!

2004-11-17, 17:53	#7
jocelynl Sep 2002 2·131 Posts	These should had some weight to our project! Great work Thomas ! Joss

2004-12-12, 15:35	#8
Thomas11 Feb 2003 3600₈ Posts	How about another big one? 80857169*2^1251076-1 is prime! -- Thomas L10

2004-12-12, 19:51	#9
jocelynl Sep 2002 2·131 Posts	Wow! rank 37, whooo now we're talking. congratulation Joss

2004-12-18, 17:17	#11
jocelynl Sep 2002 2×131 Posts	Hi Kosmaj, k=32537227 is all yours I don't have any sieve file for it It's not a very low weight at 2100 n's left at 20M but still a good choice. Joss