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Forum: Factoring 2022-08-08, 16:16
Replies: 23
Views: 1,441
Posted By henryzz
Interesting. I have modified bur's pari gp code...

Interesting. I have modified bur's pari gp code to support the new form and to detect loops(not the length)

tau(n) = {
t = 1;
f = factor(n);
for(i = 1, matsize(f)[1],
t *= f[i,2]+1
);
...
Forum: NFS@Home 2022-07-15, 11:53
Replies: 5
Views: 310
Posted By henryzz
Are there any possible compensations that can be...

Are there any possible compensations that can be done for a polynomial like this? Would composite special qs including one or more of the rare small primes(plus a larger prime?) be a possible option?
Forum: Factoring 2022-06-12, 10:44
Replies: 23
Views: 1,441
Posted By henryzz
I misread your posts and thought that example was...

I misread your posts and thought that example was on the original definition.
Based on your revised definition:
3^2*p^2*q^2*r^2
3^2*p^2*q^8
3^2*p^26
All terminate with a length 1 cycle. The...
Forum: Factoring 2022-06-11, 20:33
Replies: 23
Views: 1,441
Posted By henryzz
Many cases seem to provably terminate. Many...

Many cases seem to provably terminate. Many cycles are also provable.



There is a fairly obvious cycle that occurs for all primes > 2. (p -> 2*p -> 8*p -> p)


@Villiam 75 goes to 450 not...
Forum: GPU Computing 2022-06-07, 15:21
Replies: 7
Views: 672
Posted By henryzz
Would it possible to power the gpu using a...

Would it possible to power the gpu using a separate power supply? A second power supply can be used if you use something like...
Forum: Software 2022-06-05, 12:48
Replies: 6
Views: 895
Posted By henryzz
Congrats on getting this to compile. I have tried...

Congrats on getting this to compile. I have tried 2-3 times and failed. Is there any chance you could write up exactly how you did it so that others can do it in the future?






If you...
Forum: Factoring 2022-05-30, 08:22
Replies: 29
Views: 34,505
Posted By henryzz
Based on the output I am 90% sure that is Yafu...

Based on the output I am 90% sure that is Yafu output.
The scaling is also off what I would expect which suggests that parameters are suboptimal to me.
Forum: Software 2022-05-25, 12:32
Replies: 655
Views: 56,605
Posted By henryzz
If multiple factors are found you will just get a...

If multiple factors are found you will just get a composite factor found which is probably trivially factored.
Forum: GpuOwl 2022-04-25, 13:20
Replies: 34
Views: 3,314
Posted By henryzz
According to...

According to https://www.anandtech.com/show/15978/micron-spills-on-gddr6x-pam4-signaling-for-higher-rates-coming-to-nvidias-rtx-3090 GDDR6X would actually be better named GQDR6X. Maybe the quad data...
Forum: Msieve 2022-04-12, 13:06
Replies: 2,223
Views: 226,524
Posted By henryzz
No. This would be a nice way of doing it although...

No. This would be a nice way of doing it although it requires knowing the set of numbers to factorise prior to starting.


The method currently available to the forum involves using the normal...
Forum: Msieve 2022-04-12, 10:03
Replies: 2,223
Views: 226,524
Posted By henryzz
I was more envisoning using the cado siever and...

I was more envisoning using the cado siever and running it as a forum project as I believe it would be more robust to the odd parameterisations that this would generate. For example putting 4x^8 +...
Forum: Msieve 2022-04-11, 19:40
Replies: 2,223
Views: 226,524
Posted By henryzz
Are there any slightly larger candidates with the...

Are there any slightly larger candidates with the same algebraic polynomials that would be best as snfs? I wonder whether there is any sense in attempting a nfs factory approach to factoring them.
...
Forum: Factoring 2022-04-10, 07:46
Replies: 1,015
Views: 142,891
Posted By henryzz
Factoring...

Factoring 1528152860898312226820507829734311038694803153043007 ^ 5 - 1 has reduced the proof for 13^4 to 2500 to a third of its previous size(15.6M stat_rec vs 46.4M stat_rec).
Currently have 7/15...
Forum: NFS@Home 2022-04-06, 13:18
Replies: 126
Views: 15,787
Posted By henryzz
Exactly edit: By default it does. I think...

Exactly


edit: By default it does. I think it now aims to not care. You could even have two algebraic I think.
Forum: NFS@Home 2022-04-06, 10:19
Replies: 126
Views: 15,787
Posted By henryzz
I have edited my post to add the SNFS...

I have edited my post to add the SNFS difficulty(yes SNFS 204) and change lss: 0 to lss: 1. We definitely want to sieve on the rational side.
Forum: NFS@Home 2022-04-06, 09:12
Replies: 126
Views: 15,787
Posted By henryzz
QUEUED AS 152__007_5m1 SNFS for OPN...

QUEUED AS 152__007_5m1

SNFS for OPN candidate 1528152860898312226820507829734311038694803153043007 ^ 5 - 1
ECMed 4200+ curves at 26e7



# SNFS difficulty is 204.737 which is approximately...
Forum: Factoring 2022-04-05, 04:18
Replies: 1,015
Views: 142,891
Posted By henryzz
Sounds like the sieve region should be altered to...

Sounds like the sieve region should be altered to 40M-100M. This reduces the estimated relations to 204M. This is still on the high side but I have read large quartics have a higher dup rate.
Forum: Factoring 2022-04-03, 20:44
Replies: 1,015
Views: 142,891
Posted By henryzz
Have done some test sieving for this number with...

Have done some test sieving for this number with 14e. lpbr/a combinations of 31/31, 31/30 and 30/30 provide 4180, 3274 and 2252 relations respectively (test sieve at q=70M). Speed is very similar....
Forum: Factoring 2022-03-30, 19:31
Replies: 1,015
Views: 142,891
Posted By henryzz
How much ECM should be done on this candidate...

How much ECM should be done on this candidate given it will be a quartic?
Have run 1280 curves at B1=80000000, B2=288621393076 assisted by my GPU. This plus other smaller work leaves it at 1.5x t45...
Forum: Factoring 2022-03-29, 09:50
Replies: 1,015
Views: 142,891
Posted By henryzz
Does anyone have an ECM status for...

Does anyone have an ECM status for 1528152860898312226820507829734311038694803153043007^5-1?

This would shorten the proof for 13 quite a bit. 1528152860898312226820507829734311038694803153043007...
Forum: GPU Computing 2022-03-26, 09:41
Replies: 381
Views: 63,932
Posted By henryzz
That seems to compile and run. I am not sure I...

That seems to compile and run. I am not sure I triggered those codepaths though.
Forum: GpuOwl 2022-03-25, 09:43
Replies: 33
Views: 1,667
Posted By henryzz
I have CUDA working flawlessly. When I got CUDA...

I have CUDA working flawlessly. When I got CUDA working I tried and failed to get OpenCL working. That was very early days for WSL2 GPU acceleration though(Windows preview).
Forum: GPU Computing 2022-03-23, 22:49
Replies: 381
Views: 63,932
Posted By henryzz
The error in post #376 still exists. Once I...

The error in post #376 still exists. Once I avoided that(not sure if I correctly did) it compiles and runs.


I think Q is probably wrongly typed. Taking the absolute value of an unsigned integer...
Forum: YAFU 2022-03-22, 09:24
Replies: 16
Views: 950
Posted By henryzz
Not aware of this being available. For numbers...

Not aware of this being available. For numbers that could vaguely benefit from this cado probably isn't a bad option.
Forum: Factoring 2022-03-17, 09:37
Replies: 144
Views: 17,439
Posted By henryzz
If thats the case then a kernal benchmark would...

If thats the case then a kernal benchmark would be useful that identifies the fastest kernels for each card. I currently have a version with all the possible kernals added upto 300 digits or so.
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