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Search: Posts Made By: axn
Forum: PrimeNet 2022-08-12, 07:36
Replies: 2,498
Views: 315,385
Posted By axn
My results from last night is not reflected in...

My results from last night is not reflected in the totals, so I submitted them again.
Forum: kriesel 2022-08-08, 15:52
Replies: 88
Views: 30,048
Posted By axn
isnearp(n)=my(d=digits(n),m=0); for(i=1, #d\2,...

isnearp(n)=my(d=digits(n),m=0); for(i=1, #d\2, if(d[i] != d[#d-i+1], m++)); (m==1)

c=0; forprime(p=10^8,10^9, c+=isnearp(p)); c

I think I know why your count is double the actual. A given...
Forum: kriesel 2022-08-08, 13:25
Replies: 88
Views: 30,048
Posted By axn
If I haven't made any mistakes with my PARI...

If I haven't made any mistakes with my PARI script, the actual number is 174775, which is suspiciously about half of your estimate. Probably indicates that you're somehow doublecounting.

EDIT:-...
Forum: Software 2022-08-07, 05:15
Replies: 663
Views: 57,571
Posted By axn
If it is possible to upgrade the RAM in your...

If it is possible to upgrade the RAM in your computer, upgrade it to the maximum capacity and allocate the maximum RAM you can to the program. It will automatically choose _much_ higher bounds.
Forum: Linux 2022-08-01, 05:10
Replies: 10
Views: 561
Posted By axn
Do you use sudo crontab for @reboot? I have it,...

Do you use sudo crontab for @reboot? I have it, and it works fine.
Forum: Data 2022-07-28, 08:01
Replies: 1,409
Views: 191,976
Posted By axn
And it shall be done...

And it shall be done...
Forum: Cloud Computing 2022-07-25, 14:30
Replies: 3
Views: 268
Posted By axn
Sounds about right. Single core 13 days vs 4 core...

Sounds about right. Single core 13 days vs 4 core 5 days sounds pretty good.
Forum: Software 2022-07-21, 14:24
Replies: 49
Views: 3,004
Posted By axn
Couple of hits in quick succession: ECM found a...

Couple of hits in quick succession:
ECM found a factor in curve #17, stage #2
Sigma=3692827876263630, B1=250000, B2=235419030.
UID: axn/c2, M905621 has a factor: 11139426256343765204839823 (ECM...
Forum: Software 2022-07-18, 13:19
Replies: 49
Views: 3,004
Posted By axn
Another success: ECM found a factor in curve...

Another success:
ECM found a factor in curve #1, stage #2
Sigma=3154775547629108, B1=250000, B2=235419030.
UID: axn/c1, M903407 has a factor: 1066347780167947196737336563937 (ECM curve 1,...
Forum: Data 2022-07-17, 01:32
Replies: 186
Views: 15,667
Posted By axn
We should probably stick in a few P+1 in there as...

We should probably stick in a few P+1 in there as well (wink wink nudge nudge)
Forum: Software 2022-06-30, 12:06
Replies: 49
Views: 3,004
Posted By axn
Have you thrown a 100GB at the problem? :whistle:...

Have you thrown a 100GB at the problem? :whistle:

If I can get access to the pre-beta (with instructions, if any), I can do some high memory testing and report back on the behavior
Forum: Information & Answers 2022-06-27, 16:21
Replies: 27
Views: 1,277
Posted By axn
The output will show the FFT selected, the worker...

The output will show the FFT selected, the worker configuration, affinities, etc. Let us understand the problem first before attempting a solution/

ECM work you're mentioning (M1000000) is very...
Forum: Information & Answers 2022-06-27, 15:56
Replies: 27
Views: 1,277
Posted By axn
It would be more helpful if you post the screen...

It would be more helpful if you post the screen outputs from both systems.

BTW, according to ark, E5-2680 v4 is a 14-core system, so you should be able to run 14 threads at the same time.
Forum: Information & Answers 2022-06-26, 13:29
Replies: 6
Views: 658
Posted By axn
We get a shot at fully factoring them. They have...

We get a shot at fully factoring them. They have some mathematical uses (or so I've been told), but is also a fun challenge. See https://www.mersenne.ca/prp.php for the current list of fully...
Forum: Information & Answers 2022-06-19, 04:17
Replies: 6
Views: 658
Posted By axn
It is more efficient to use the full mersenne...

It is more efficient to use the full mersenne number for the FFT operations (because of its special form) rather than just the unfactored part. In fact, even if the unfactored part was just half the...
Forum: FactorDB 2022-06-14, 09:41
Replies: 572
Views: 108,229
Posted By axn
http://www.factordb.com/datenschutz.html - scroll...

http://www.factordb.com/datenschutz.html - scroll to the end. I assume it is current.
Forum: Data 2022-06-12, 03:59
Replies: 186
Views: 15,667
Posted By axn
So... I'm kinda done with 1.0m. There are a few...

So... I'm kinda done with 1.0m. There are a few ones with high B1/low B2 combinations that I don't want to touch. Apart from that, everything is done to decent depth.
Forum: PrimeNet 2022-06-10, 09:53
Replies: 131
Views: 33,164
Posted By axn
https://www.mersenne.ca/exponent/194544733 and...

https://www.mersenne.ca/exponent/194544733 and https://www.mersenne.ca/exponent/194546867 suggests the factors were previously known; merely that the "factor found" entry is not there in primenet.
...
Forum: Data 2022-06-04, 05:24
Replies: 589
Views: 125,262
Posted By axn
"Sid & Andy" is petrw1's GIMPS...

"Sid & Andy" is petrw1's GIMPS username
Forum: Data 2022-06-04, 02:03
Replies: 589
Views: 125,262
Posted By axn
Congrats @petrw1. I believe this is the first...

Congrats @petrw1. I believe this is the first "confirmed kill" for the "low" project
Forum: Software 2022-05-28, 14:33
Replies: 5
Views: 430
Posted By axn
We store about 18 bits per IEEE fp64, so it is...

We store about 18 bits per IEEE fp64, so it is more lime 6-7M. But I guess that just strengthens your case.


Modern processors can do 8-16 floating point ops/cycles (including muls & adds). Data...
Forum: Software 2022-05-27, 05:03
Replies: 675
Views: 110,650
Posted By axn
No. Only (p, 2p+1) is SG When...

No. Only (p, 2p+1) is SG



When p=k*2^n-1, 2p+1 = k*2^(n+1)-1. Both are easily provable by LLR.
When p=k*2^n+1, 2p+1 = k*2^(n+1)+3, but is still provable, since, by definition, we have 100%...
Forum: Lone Mersenne Hunters 2022-05-23, 17:17
Replies: 2,174
Views: 337,580
Posted By axn
Nice!

Nice!
Forum: Soap Box 2022-05-23, 01:54
Replies: 43
Views: 1,551
Posted By axn
(-3.88, -4.92)

(-3.88, -4.92)
Forum: Software 2022-05-23, 01:35
Replies: 663
Views: 57,571
Posted By axn
Precisely.

Precisely.
Showing results 1 to 25 of 1000

 
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