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Forum: And now for something completely different 2021-02-08, 16:53
Replies: 14
Views: 2,137
Posted By Puzzle-Peter
I just realised my record did not survive long....

I just realised my record did not survive long. Congratulations!
Forum: And now for something completely different 2021-02-04, 15:15
Replies: 54
Views: 18,540
Posted By Puzzle-Peter
The way Primo works is (very simply put) as...

The way Primo works is (very simply put) as follows: it looks for a number that is slightly smaller than the candidate (how much smaller is given as "gain" in bits) in such a way that the candidate...
Forum: And now for something completely different 2021-02-01, 17:40
Replies: 9
Views: 864
Posted By Puzzle-Peter
I did upload the septuplet in Sergeis notation. ...

I did upload the septuplet in Sergeis notation.


Thanks :smile:
Forum: And now for something completely different 2021-01-27, 19:07
Replies: 9
Views: 864
Posted By Puzzle-Peter
I'll give it a better try next time. Chris...

I'll give it a better try next time. Chris Caldwell does not like unnecessarily long descriptions.

I used a tweaked version of Robert Gerbicz' Polysieve for sieving and PFGW for testing. Primo for...
Forum: And now for something completely different 2021-01-27, 17:59
Replies: 9
Views: 864
Posted By Puzzle-Peter
Thanks! How do you find the short description?

Thanks!
How do you find the short description?
Forum: And now for something completely different 2021-01-27, 16:13
Replies: 9
Views: 864
Posted By Puzzle-Peter
Plus First titanic septuplet

Hi folks,


...
Forum: Lounge 2021-01-06, 10:25
Replies: 1,722
RIP
Views: 157,321
Posted By Puzzle-Peter
Alexi Laiho, singer / guitarist in Children Of...

Alexi Laiho, singer / guitarist in Children Of Bodom. I'm not their greatest fan, but the man certainly had talent.
Forum: Five or Bust - The Dual Sierpinski Problem 2020-11-25, 14:27
Replies: 8
Views: 5,889
Posted By Puzzle-Peter
Cool. I've had my share of XXL certificates. No...

Cool. I've had my share of XXL certificates. No more...
Forum: Five or Bust - The Dual Sierpinski Problem 2020-11-24, 17:03
Replies: 8
Views: 5,889
Posted By Puzzle-Peter
Primo has a built-in limit on the candidate size....

Primo has a built-in limit on the candidate size. Marcel Martin increases the limit from time to time as better hardware allows for bigger tests. At the moment the limit is 132,928 bits which is...
Forum: And now for something completely different 2020-11-13, 11:24
Replies: 14
Views: 2,137
Posted By Puzzle-Peter
Oh the cruelty! :lol: When sieving for a...

Oh the cruelty! :lol:


When sieving for a 6tuplet, you eliminate a lot of possible 5tuplets because +8 or -8 gets sieved out. So you probably will have to use a larger candidate range. Does it...
Forum: And now for something completely different 2020-11-12, 11:37
Replies: 14
Views: 2,137
Posted By Puzzle-Peter
1) I didn't go for a number that is N-1...

1)
I didn't go for a number that is N-1 provable. I was looking for quintuplets, so Primo would be needed anyway. The problem is that the sieve files get very sparse when you search for n-tuplets....
Forum: And now for something completely different 2020-11-06, 11:28
Replies: 14
Views: 2,137
Posted By Puzzle-Peter
Thanks! That explains why the n=0 number was...

Thanks!

That explains why the n=0 number was provable via N-1. The long number fell out of a script I knocked together for CRT. I didn't investigate further as I was happy enough it ran without...
Forum: And now for something completely different 2020-11-05, 12:04
Replies: 14
Views: 2,137
Posted By Puzzle-Peter
New quintuplet

Hey folks,


I found a nice prime quintuplet with 2002 decimal digits:


208488047305875799520424701159167603377978422253392827160551251670223210710614891907691541641382959723840996115289...
Forum: Conjectures 'R Us 2020-09-13, 07:42
Replies: 299
Sticky: News
Views: 54,269
Posted By Puzzle-Peter
Wow, that is bad news. RIP Ian. At least we...

Wow, that is bad news. RIP Ian.
At least we know of his passing. With most members we probably wouldn't and they would simply disappear.
Forum: Computer Science & Computational Number Theory 2020-02-13, 14:50
Replies: 33
Views: 19,157
Posted By Puzzle-Peter
What a monster. Congrats!

What a monster. Congrats!
Forum: And now for something completely different 2020-01-23, 08:29
Replies: 47
Views: 21,745
Posted By Puzzle-Peter
18416522281203*2^33222-1 ...

18416522281203*2^33222-1
18416522281203*2^33222+5
18416522281203*2^33222+11

Primo certificates for the latter two are uploaded to factordb
Forum: And now for something completely different 2019-10-02, 19:25
Replies: 47
Views: 21,745
Posted By Puzzle-Peter
I had a bit of fun with (x+2)*(ax²-3) ...

I had a bit of fun with (x+2)*(ax²-3) -1 / +5
= -3x - 6 +a(x³+2x²) -1 / +5

helpers are x for N+1 proof of the +5 candidate and x+2 for N+1 proof of the -1 candidate, so...
Forum: Miscellaneous Math 2019-09-19, 15:40
Replies: 16
Views: 1,348
Posted By Puzzle-Peter
What about triplets p, p+4, p+6?

What about triplets p, p+4, p+6?
Forum: Conjectures 'R Us 2019-07-09, 15:44
Replies: 3,858
Views: 289,860
Posted By Puzzle-Peter
As I don't have any LLRing reservations at the...

As I don't have any LLRing reservations at the moment, I can do some sieving. If you like, give me a file and I'll sieve it.
Forum: Twin Prime Search 2019-07-05, 12:53
Replies: 13
Views: 11,204
Posted By Puzzle-Peter
During the holiday season I am granted access to...

During the holiday season I am granted access to a Nvidia Tesla system in exchange for taking care of the house and the cat lol. I would like to see how fast tpsieve-cuda will run on this but it is...
Forum: Twin Prime Search 2019-07-04, 18:26
Replies: 13
Views: 11,204
Posted By Puzzle-Peter
I had a look at the source, but that's not what I...

I had a look at the source, but that's not what I am very good at. I learned it is "built from the ppsieve package" but I am at a loss at how to get a tpsieve from that?


I had a hard time...
Forum: And now for something completely different 2019-06-24, 18:26
Replies: 47
Views: 21,745
Posted By Puzzle-Peter
Had my machine fool around with polysieve and...

Had my machine fool around with polysieve and pfgw when I was on vacation. This is what I came back to:


3039197559912*2^5000+17
3039197559912*2^5000+11
3039197559912*2^5000+5...
Forum: And now for something completely different 2019-05-26, 18:25
Replies: 9
Views: 5,519
Posted By Puzzle-Peter
I'm afraid there is no documentation apart from...

I'm afraid there is no documentation apart from what you find in the code.


Just to make sure:
What is the running variable in your example?
Forum: And now for something completely different 2019-05-23, 17:22
Replies: 9
Views: 5,519
Posted By Puzzle-Peter
The gmp version of polysieve should be rather...

The gmp version of polysieve should be rather easy to adapt. It is not originally written for this kind of task, but with the correct input it will be doing this. The major modification will be...
Forum: Conjectures 'R Us 2019-05-13, 14:41
Replies: 2,282
Views: 198,780
Posted By Puzzle-Peter
R366 tested to n=2M, still one k remaining....

R366 tested to n=2M, still one k remaining. Releasing base.
Showing results 1 to 25 of 683

 
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