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Search: Posts Made By: Prime95
Forum: Data 2021-04-14, 03:33
Replies: 15
Views: 314
Posted By Prime95
Yes, useless. I'm not even sure it will be...

Yes, useless.

I'm not even sure it will be useful to the let's get number of unfactored exponents below 20M crowd.

The biggest advantage I see to studying P+1 is that stage 2 should be faster...
Forum: Data 2021-04-14, 00:09
Replies: 15
Views: 314
Posted By Prime95
Lookup M4933 at mersenne.ca to see how 14620......

Lookup M4933 at mersenne.ca to see how 14620... factors.

To make understanding the P+1 algorithm even more complicated, the 50% of the time the algorithm misses P+1 factors, the algorithm was...
Forum: Data 2021-04-14, 00:04
Replies: 15
Views: 314
Posted By Prime95
Caveat: I'm not a P+1 expert. When we...

Caveat: I'm not a P+1 expert.



When we do P-1 on Mersenne numbers factors are of the form f=2kp+1, thus we find a factor f when k=(f-1)/(2p) is B1/B2-smooth.

With P+1, factors are of the...
Forum: Data 2021-04-13, 20:18
Replies: 15
Views: 314
Posted By Prime95
P+1 stage 1 would be a little less than twice as...

P+1 stage 1 would be a little less than twice as slow as P-1 stage 1.
P+1 stage 2 would be a little faster than P-1 stage 2.

If prime95 supported P+1 it might produce output like this for a 2/7...
Forum: Information & Answers 2021-04-12, 03:08
Replies: 12
Views: 367
Posted By Prime95
Please email prime.log and results.json.txt to...

Please email prime.log and results.json.txt to me. Maybe I can figure out what's going on.
Forum: Information & Answers 2021-04-11, 04:19
Replies: 12
Views: 367
Posted By Prime95
Looking at the error logs, I believe you found a...

Looking at the error logs, I believe you found a factor for 110827351. I have submitted the result on your behalf.

Here's what happened. A year or two ago we had a troublemaker trying to cause...
Forum: Information & Answers 2021-04-11, 01:58
Replies: 12
Views: 367
Posted By Prime95
That could be part of the problem..... and...

That could be part of the problem..... and Welcome to GIMPS and welcome to the forum!

My email address is :woltman:
Forum: Information & Answers 2021-04-10, 19:39
Replies: 12
Views: 367
Posted By Prime95
Not sure what has happened. Please PM/email...

Not sure what has happened. Please PM/email prime.log to me.

Go to https://www.mersenne.org/manual_result/ and copy the contents of results.json.txt then submit. Before a proof can be uploaded,...
Forum: Marin's Mersenne-aries 2021-04-09, 16:31
Replies: 147
Views: 11,627
Posted By Prime95
There was code to expire PRP-CF assignments more...

There was code to expire PRP-CF assignments more than 30 days old. It was broken.
Hopefully fixed, the stored procedure will run tonight. I did change it to 60 days.
Forum: Software 2021-04-09, 16:06
Replies: 136
Views: 13,606
Posted By Prime95
Probably. Never tested.

Probably. Never tested.
Forum: PrimeNet 2021-04-08, 21:17
Replies: 13
Views: 625
Posted By Prime95
First time LL is no more

The server no longer hands out first-time LL assignments. I've noted the news on the main page as well as the Manual Assignments page. Requests are converted to double-check assignments.

Let me...
Forum: Cloud Computing 2021-04-06, 04:44
Replies: 77
Views: 3,882
Posted By Prime95
It is credited as PRP-DC based on the time spent.

It is credited as PRP-DC based on the time spent.
Forum: Software 2021-04-05, 20:20
Replies: 136
Views: 13,606
Posted By Prime95
Theoretically possible but I'm very afraid I'd...

Theoretically possible but I'm very afraid I'd make a mistake. Even the most subtle change in initial state can affect how the primes are paired.

You might try MaximumBitArraySize=n in prime.txt....
Forum: Cloud Computing 2021-04-05, 16:43
Replies: 77
Views: 3,882
Posted By Prime95
You read between the lines well. The server...

You read between the lines well. The server cannot prevent someone from taking a PRP assignment and turning it into an LL test.

I'd prefer you do double-checks instead -- first time LL...
Forum: Cloud Computing 2021-04-05, 07:26
Replies: 77
Views: 3,882
Posted By Prime95
Warning: Server will soon refuse to give first...

Warning: Server will soon refuse to give first time LL tests. I haven't thought through all the details, most likely a double-check will be assigned.

The server will still accept first-time LL...
Forum: Marin's Mersenne-aries 2021-04-04, 23:52
Replies: 147
Views: 11,627
Posted By Prime95
Done. Let me know if you see cases where this is...

Done. Let me know if you see cases where this is not working
Forum: Marin's Mersenne-aries 2021-04-03, 19:36
Replies: 147
Views: 11,627
Posted By Prime95
I'm thinking of instituting a 60-day limit for...

I'm thinking of instituting a 60-day limit for first-time/double-check PRPs and 30 days for PRP-CF.
Forum: Marin's Mersenne-aries 2021-04-03, 17:30
Replies: 147
Views: 11,627
Posted By Prime95
They were PRP tested with proof. The server is...

They were PRP tested with proof. The server is still waiting for the proof to be uploaded.
Forum: Information & Answers 2021-03-29, 16:23
Replies: 9
Views: 357
Posted By Prime95
I suspect 8 would be faster and more likely to...

I suspect 8 would be faster and more likely to have occasional successes. 5 is a little more noteworthy when you have a success. Your machine is well suited to either work preference.
Forum: Software 2021-03-24, 15:47
Replies: 1
Views: 191
Posted By Prime95
I will add that information in the next release.

I will add that information in the next release.
Forum: Factoring 2021-03-23, 18:12
Replies: 12
Views: 598
Posted By Prime95
I'll let others answer your P-1 questions. ...

I'll let others answer your P-1 questions.

ECM may be the easier choice. Just get version 30.5 and set your available memory and work preference to ECM. All the B1/B2 choices will be made for...
Forum: Software 2021-03-23, 18:05
Replies: 136
Views: 13,606
Posted By Prime95
Pfactor uses slightly different optimization...

Pfactor uses slightly different optimization criteria than "Pminus1=". Pfactor is optimizing for minimizing the total time spent doing P-1, LL, and DC. That is, it is maximizing the LL/DC CPU...
Forum: Science & Technology 2021-03-23, 03:23
Replies: 189
Views: 9,180
Posted By Prime95
Got my vaccine (first shot) today! @LaurV: ...

Got my vaccine (first shot) today!

@LaurV: You just spent $1700 on hardware but won't spring for a vaccine? Please reconsider - we need you here for the long haul!
Forum: PrimeNet 2021-03-22, 22:57
Replies: 8
Views: 373
Posted By Prime95
Yes, but frowned upon. Ignore the discussion...

Yes, but frowned upon.

Ignore the discussion of Cudalucas and shift counts, etc. The issue is: "Is it acceptable to double-check your own results"? The server will accept your double-check, so...
Forum: Software 2021-03-21, 05:58
Replies: 136
Views: 13,606
Posted By Prime95
30.5 build 2 available. It fixes the one...

30.5 build 2 available. It fixes the one reported bug.
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