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Forum: GMP-ECM 2022-09-22, 17:07
Replies: 21
Views: 991
Posted By axn
Is a fix forthcoming? Should I stop running ECM...

Is a fix forthcoming? Should I stop running ECM using 30.9 till then?
Forum: GMP-ECM 2022-09-19, 13:33
Replies: 21
Views: 991
Posted By axn
Technically, finding a factor when it is not...

Technically, finding a factor when it is not supposed to /is/ an incorrect result.

I just searched nearby values for sigmas that work. s+18 and s+2^168 (1-bit hamming distance) work. Of course it...
Forum: GMP-ECM 2022-09-18, 06:07
Replies: 21
Views: 991
Posted By axn
Is the computation repeatable with the same...

Is the computation repeatable with the same sigma? Perhaps the sigma got corrupted -- either during printing or during computation?

FWIW, Pari agrees with factordb

ecmgroup(p, s)={...
Forum: Software 2022-09-11, 11:17
Replies: 718
Views: 66,510
Posted By axn
I am not sure this offers significantly more...

I am not sure this offers significantly more throughput (if at all) compared to simple-minded 1-worker-all-core setup for both 1st and 2nd stages. I'd advise you to run both configurations for a few...
Forum: Software 2022-09-10, 14:24
Replies: 718
Views: 66,510
Posted By axn
I dont think that would help. This is not an...

I dont think that would help. This is not an issue related to parameter parsing. Rather, it is intended behavior.
Forum: Software 2022-09-10, 02:04
Replies: 718
Views: 66,510
Posted By axn
Get rid of the TF parameter. For example...

Get rid of the TF parameter.
For example Pminus1=1,2,947917,-1,50000000,50000000 is a current entry in my workodo and it does only the stage 1
Forum: Data 2022-09-10, 01:56
Replies: 65
Views: 1,957
Posted By axn
In post #29, I give the reason why this...

In post #29, I give the reason why this adjustment is not needed. In fact, if this adjustment is done, it will actually result in sub-optimal bounds calculation.
Forum: Data 2022-09-05, 16:19
Replies: 65
Views: 1,957
Posted By axn
You have erroneously used 74 bits as TF depth in...

You have erroneously used 74 bits as TF depth in the mersenne.ca calculator for one of them
Forum: Data 2022-09-05, 07:52
Replies: 65
Views: 1,957
Posted By axn
For all intents and purpose, there is no such...

For all intents and purpose, there is no such thing. The more RAM you throw at it, the better the results.
Forum: And now for something completely different 2022-09-03, 03:25
Replies: 4
Views: 318
Posted By axn
Sort / filter by date to identify the latest...

Sort / filter by date to identify the latest submissions?
Forum: Data 2022-09-02, 13:39
Replies: 65
Views: 1,957
Posted By axn
Prior P-1 wouldn't change the optimality of the...

Prior P-1 wouldn't change the optimality of the selected bounds. It only changes the profitability of P-1 -- i.e. whether more P-1 is warranted or directly proceed to DC.

We're trying to maximize...
Forum: Miscellaneous Math 2022-08-26, 15:52
Replies: 23
Views: 817
Posted By axn
Have you transcribed the number correctly? This...

Have you transcribed the number correctly? This (http://www.factordb.com/index.php?id=1100000003858133740) says it has tiny factors
Forum: PrimeNet 2022-08-23, 15:34
Replies: 145
Views: 34,864
Posted By axn
Numberwang is a fictional show-within-a-show in...

Numberwang is a fictional show-within-a-show in "That Mitchell and Webb Look". Search youtube.
Forum: Software 2022-08-16, 14:41
Replies: 62
Views: 5,265
Posted By axn
It is probably better to do t30 on 10 exponents...

It is probably better to do t30 on 10 exponents rather than t35 on a single one. You're more likely to find a factor.


If you're determined to do t35, going straight to 1M would probably be...
Forum: PrimeNet 2022-08-12, 07:36
Replies: 2,523
Views: 325,172
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: 93
Views: 30,550
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: 93
Views: 30,550
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: 718
Views: 66,510
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: 1,669
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: 1,414
Views: 199,650
Posted By axn
And it shall be done...

And it shall be done...
Forum: Cloud Computing 2022-07-25, 14:30
Replies: 3
Views: 418
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: 62
Views: 5,265
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: 62
Views: 5,265
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: 203
Views: 19,164
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: 62
Views: 5,265
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
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