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Search: Posts Made By: kuratkull
Forum: Riesel Prime Search 2021-04-29, 20:22
Replies: 1,965
Views: 204,922
Posted By kuratkull
197*2^4765318-1 is prime! (1434506 decimal...

197*2^4765318-1 is prime! (1434506 decimal digits)


https://primes.utm.edu/primes/page.php?id=132236
Forum: And now for something completely different 2021-04-05, 20:41
Replies: 270
Views: 44,691
Posted By kuratkull
Base 42 is done to n=100k 2 primes reported in...

Base 42 is done to n=100k
2 primes reported in other thread.
Planning to continue, so reserving up to n=150k
Forum: And now for something completely different 2021-04-05, 20:39
Replies: 248
Views: 41,495
Posted By kuratkull
Base 42 tested to n=100k (continuing) Two...

Base 42 tested to n=100k (continuing)
Two primes found:
(42^33475+1)^2-2 is 3-PRP! (135.6747s+0.0009s)
(42^40891-1)^2-2 is 3-PRP! (199.4855s+0.0010s)
Forum: And now for something completely different 2021-03-06, 17:16
Replies: 270
Views: 44,691
Posted By kuratkull
I'm reserving base 42 to 100k with the intent to...

I'm reserving base 42 to 100k with the intent to take it further if all goes well.
Forum: Riesel Prime Search 2021-03-06, 09:13
Replies: 1,965
Views: 204,922
Posted By kuratkull
195*2^4685711-1 is prime! (1410542 decimal...

195*2^4685711-1 is prime! (1410542 decimal digits)

https://primes.utm.edu/primes/page.php?id=132121

k<300 highest Nash weight k delivers again.
Forum: Riesel Prime Search 2021-02-02, 12:40
Replies: 1,030
Views: 135,725
Posted By kuratkull
progress report: k=193 at n=4.6M k=195...

progress report:


k=193 at n=4.6M
k=195 at n=4.6M
k=197 at n=4.6M
Forum: Riesel Prime Search 2020-11-04, 06:56
Replies: 1,965
Views: 204,922
Posted By kuratkull
195*2^4373994-1 is prime! (1316706 digits) ...

195*2^4373994-1 is prime! (1316706 digits)

https://primes.utm.edu/primes/page.php?id=131376

Non-essential fun facts:
1) k=195 is the highest Nash weight k in RSP k<300, with a weight of...
Forum: Riesel Prime Search 2020-09-21, 05:55
Replies: 1,030
Views: 135,725
Posted By kuratkull
3 month update: k=193 at n=4.2M k=195 at...

3 month update:
k=193 at n=4.2M
k=195 at n=4.2M
k=197 at n=4.2M

continuing all

(rieselprime.de updated)
Forum: Riesel Prime Search 2020-07-02, 12:33
Replies: 409
Views: 68,608
Posted By kuratkull
llrCUDA works, I have been running one for...

llrCUDA works, I have been running one for months. But it's slow, much slower than a CPU in the same class .
I am getting 1.1ms per iteration on n=3.8M on a 1080TI
While the same n is getting 0.271...
Forum: Riesel Prime Search 2020-06-11, 14:11
Replies: 1,030
Views: 135,725
Posted By kuratkull
3 month update: k=193 at n=3.7M k=195 at...

3 month update:
k=193 at n=3.7M
k=195 at n=3.7M
k=197 at n=3.7M

continuing all

(will also update and link from rieselprime.de)
Forum: PrimeNet 2020-05-19, 06:17
Replies: 4
Views: 2,491
Posted By kuratkull
I can appreciate strict primality over PRP of...

I can appreciate strict primality over PRP of course. But I would like to point out that the likelihood PRPs the size of this specific number being Fermat liars is in the neighborhood of 10-50000. So...
Forum: Hardware 2020-04-30, 16:03
Replies: 3
Views: 2,142
Posted By kuratkull
Take a bunch of reasonably sized primes from...

Take a bunch of reasonably sized primes from Top5k or from the forums and run them.
Forum: Software 2020-04-22, 06:21
Replies: 300
Views: 58,518
Posted By kuratkull
Printing Carriage Return instead of the Newline...

Printing Carriage Return instead of the Newline symbol does that to a line.
Also I wouldn't say "Probabilistic vs Deterministic" is the reason we use the LLR test vs the Fermat test. The LLR test is...
Forum: Cloud Computing 2020-04-14, 14:07
Replies: 1,151
Views: 102,804
Posted By kuratkull
Indeed it randomly notifies about the lapsing of...

Indeed it randomly notifies about the lapsing of the 10-12 hours by saying my session was inactive, though of course it wasn't. I think it's just a mistake on their part. I have an automated setup...
Forum: Cloud Computing 2020-04-13, 06:32
Replies: 43
Views: 12,064
Posted By kuratkull
I am sure Google tries its best so that users...

I am sure Google tries its best so that users wouldn't see that. But I can see how instances could be unavailable for a short time in times of congestion. Other than that one brief time when it...
Forum: Cloud Computing 2020-04-08, 14:55
Replies: 43
Views: 12,064
Posted By kuratkull
Just happened to both of my accounts. Got...

Just happened to both of my accounts. Got backends again a short time later.
Forum: GPU to 72 2020-04-07, 15:27
Replies: 208
Views: 34,880
Posted By kuratkull
Just a note: You can not (usually) copyright a...

Just a note: You can not (usually) copyright a word/name. A word/name needs a (possibly registered) trademark. What you may have on your hands with GPU72 is a...
Forum: Cloud Computing 2020-04-07, 08:02
Replies: 43
Views: 12,064
Posted By kuratkull
CPU instances (for LLR64) have been...

CPU instances (for LLR64) have been stable/predictable for the last couple of weeks. I use two accounts with 4 instances each. They both get about 12 hours of runtime a day. Both accounts expire and...
Forum: Prime Wiki 2020-04-03, 21:37
Replies: 199
Sticky: Prime-Wiki
Views: 48,741
Posted By kuratkull
My previous comment was actually distressed about...

My previous comment was actually distressed about the suggestion of removing the k<300 table. That table seems very well defined and grows slowly. On the other hand the table for 'all' k's is indeed...
Forum: Prime Wiki 2020-04-03, 18:29
Replies: 199
Sticky: Prime-Wiki
Views: 48,741
Posted By kuratkull
The table is the most useful thing in the whole...

The table is the most useful thing in the whole wiki. It allows visual analysis and is just beautiful to look at. The HTML for the list of all Riesel k's is 50KB. That's nothing, your average cat...
Forum: Information & Answers 2020-03-21, 14:35
Replies: 12
Views: 5,262
Posted By kuratkull
Why would it be less than 100%? You want it to do...

Why would it be less than 100%? You want it to do work, so it does work on the cores you give to it.
Forum: Software 2020-03-20, 14:46
Replies: 14
Views: 5,065
Posted By kuratkull
Hi, just to chip in about CPU issues. The...

Hi, just to chip in about CPU issues. The GenuineIntel doesn't matter, all CPU's are genuine. Nobody makes "counterfeit Intel CPUs", well not working ones at least. To know if it's an ES you can look...
Forum: Programming 2020-03-18, 14:29
Replies: 51
Views: 21,588
Posted By kuratkull
R.D. Silverman - I think you mixed me up with the...

R.D. Silverman - I think you mixed me up with the OP. I am not trying to implement anything, I already did: https://github.com/dkull/rpt
Most of the stuff you commented on was left out/ignored for...
Forum: Programming 2020-03-18, 13:41
Replies: 51
Views: 21,588
Posted By kuratkull
Doing some back-of-the-napkin math here, which...

Doing some back-of-the-napkin math here, which might not be correct - I am not a mathematician, but a software engineer.
We have N=2^n-1. Let's assume n "tries" to get 1 as a result of the mod...
Forum: Programming 2020-03-17, 13:23
Replies: 51
Views: 21,588
Posted By kuratkull
Prime95, LLR64, and even my own implementation...

Prime95, LLR64, and even my own implementation use the gwnum library for the core multiplication/subtraction/modulus, not the builtin %, which works only on native ints. Before I wrote my final...
Showing results 1 to 25 of 142

 
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