1)
Message boards :
Number crunching :
Beta testing of PRST app is open on "GFN Server"
(Message 160668)
Posted 98 days ago by  Bur
This is exciting news, especially that multithreading is now possible. Looking forward to it going live, the last discovery for primorial + 1 has been 21 years ago...
Btw, there was quite some outside-Primegrid work on Factorials in the last year. Will PG doublecheck those ranges?
|
2)
Message boards :
General discussion :
Prime top 5000 retiring
(Message 159215)
Posted 141 days ago by Bur
That's great news, thanks for taking over. :)
|
3)
Message boards :
General discussion :
Prime top 5000 retiring
(Message 158687)
Posted 164 days ago by Bur
Unfortunately, it seems that Prof Caldwell is retiring from maintaining the Prime Pages.
Does anyone here know anything about someone possibly taking over? At mersenneforum no one seems to know any details. It'd be sad if it would just go.
edit: the message is gone now from the website. Maybe they found someone.
|
4)
Message boards :
Number crunching :
Public weak account keys?
(Message 158685)
Posted 164 days ago by Bur
Since I'm looking for the most "bang for the buck", where is that hosted? And what CPU is that?
I'm currently with an i9-10920 for 75 € / month at active-servers. Is it the GPU that makes the cloud server so expensive or the CPU?
|
5)
Message boards :
Wieferich and Wall-Sun-Sun Prime Search :
Ratio between near-WW primes
(Message 153998)
Posted 477 days ago by Bur
Update 07-02-2022
Tests upper bound: 10.5e18 / 18e18 (57 %, +0 %)
Number of near-WW found: 313 (+-0)
Distribution:
|A|<= | Actual | Expected | Deviation
-------|--------|----------|-----------
1000 | 313 | - | -
100 | 35 | 31 | +13 %
10 | 2 | 3 | -33 %
0 | 0 | 0 | 0 %
Based on the current number of near-WW
found, the probability for a WW prime is:
16 % (+-0%).
At 18e18 we would reach:
27 % (-0 %)
100 % would be reached at:
67e18 (+0e18)
Last week average numbers tested per day:
8.6E15 (-7.4E15)
ETA project completion (based on last week only):
922 days (+ 428 days)
|
6)
Message boards :
Wieferich and Wall-Sun-Sun Prime Search :
Ratio between near-WW primes
(Message 153731)
Posted 483 days ago by Bur
No new near-hit. High GPU prices are hurting innocent DC-project! The humanity!
Update 01-01-2022
Tests upper bound: 10.5e18 / 18e18 (57 %, +0 %)
Number of near-WW found: 313 (+-0)
Distribution:
|A|<= | Actual | Expected | Deviation
-------|--------|----------|-----------
1000 | 313 | - | -
100 | 35 | 31 | +13 %
10 | 2 | 3 | -33 %
0 | 0 | 0 | 0 %
Based on the current number of near-WW
found, the probability for a WW prime is:
16 % (+-0%).
At 18e18 we would reach:
27 % (-1 %)
100 % would be reached at:
67e18 (+1e18)
Last week average numbers tested per day:
16.0E15 (+3.8E15)
ETA project completion (based on last week only):
494 days (- 163 days)
|
7)
Message boards :
Number crunching :
Sabotage of Number Crunching
(Message 153573)
Posted 489 days ago by Bur
As Michael already asked, what specifically is the damage they cause to the project? The only thing is a small additional load on the BOINC server.
I can see how it's irksome, but it doesn't slow down progression at all. Btw, if you want to get annoyed have a look at the oldest unfinished SoB WU, it's from last summer and it seems another user that doesn't finish tasks picked it up. ;)
|
8)
Message boards :
Wieferich and Wall-Sun-Sun Prime Search :
Ratio between near-WW primes
(Message 153530)
Posted 491 days ago by Bur
Update 24-01-2022
Tests upper bound: 10.4e18 / 18e18 (57 %, +1 %)
Number of near-WW found: 313 (+1)
Distribution:
|A|<= | Actual | Expected | Deviation
-------|--------|----------|-----------
1000 | 313 | - | -
100 | 35 | 31 | +13 %
10 | 2 | 3 | -33 %
0 | 0 | 0 | 0 %
Based on the current number of near-WW
found, the probability for a WW prime is:
16 % (+ 0%).
At 18e18 we would reach:
28 % (-0 %)
100 % would be reached at:
67e18 (+1e18)
Last week average numbers tested per day:
12.2E15 (-1.1E15)
ETA project completion (based on last week only):
657 days (+ 46 days)
|
9)
Message boards :
Wieferich and Wall-Sun-Sun Prime Search :
Ratio between near-WW primes
(Message 153318)
Posted 498 days ago by Bur
Yes, it's only the ETA based on last week's numbers. I clarified that in the stats.
Update 17-01-2022
Tests upper bound: 10.3e18 / 18e18 (56 %, +1 %)
Number of near-WW found: 312 (+1)
Distribution:
|A|<= | Actual | Expected | Deviation
-------|--------|----------|-----------
1000 | 312 | - | -
100 | 35 | 31 | +13 %
10 | 2 | 3 | -33 %
0 | 0 | 0 | 0 %
Based on the current number of near-WW
found, the probability for a WW prime is:
16 % (+ 0%).
At 18e18 we would reach:
28 % (-0 %)
100 % would be reached at:
66e18 (+0e18)
Last week average numbers tested per day:
13.3E15 (-0.8E15)
ETA project completion (based on last week only):
609 days (+ 27 days)
|
10)
Message boards :
Project Staging Area :
New Factorial prime
(Message 153194)
Posted 504 days ago by Bur
I'm not sure if it's in some way "unfair" or not. One thing would be that his negative results aren't published whereas PRPnet's are. But unless he has serious computational power the few negatives he produces wouldn't have helped PRPnet that much.
If he works fully independent, I'd have no problem, after all nobody owns Factorials, but if he uses PRPnet to some extent - and him being that close to the edge make it seem like it - that would be like poaching. Does anyone know if he's involved somewhere like Mersenneforum?
|
