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Search: Posts Made By: bloodIce
Forum: PrimeNet 2017-09-25, 15:25
Replies: 497
Views: 46,611
Posted By bloodIce
Smile Of course I have run your Pari-scripts :smile:....

Of course I have run your Pari-scripts :smile:. Since your original discussion with James (about "k", what will that be 5-6 years ago), and I have learned a lot from your scripts (and in general from...
Forum: PrimeNet 2017-09-25, 09:57
Replies: 497
Views: 46,611
Posted By bloodIce
Once upon a time, I had tried an idea to...

Once upon a time, I had tried an idea to systematically walk through primes and find factors for Mersenne expos, but I was lagging on speed. It was simply:
1. For each prime number (N) starting from...
Forum: PrimeNet 2017-05-25, 19:25
Replies: 77
Views: 4,524
Posted By bloodIce
How come LaurV not checking neighbouring...

How come LaurV not checking neighbouring exponents instead of a DCing the same? It seems that it prompts a TC and one cycle of DC is lost. Double check is always independent. I respect him as well,...
Forum: Hardware 2017-01-27, 19:06
Replies: 17
Views: 2,002
Posted By bloodIce
Thank you for the advice. I just want to say that...

Thank you for the advice. I just want to say that DDR4@2400 is not a problem, however obviously my productivity/sek will decrease (at the end this is not only a borg). You are right that I am at 1.2V...
Forum: Hardware 2017-01-27, 07:04
Replies: 17
Views: 2,002
Posted By bloodIce
I see a moderate improvement with Kaby Lake, but...

I see a moderate improvement with Kaby Lake, but my LL results started to suffer from ROUNDOFF errors. I am using mprime 28.10 on Ubuntu 16.10. The FMA3 FFT length is 5760K and I did not have a...
Forum: Lounge 2016-12-21, 10:40
Replies: 20
Views: 1,583
Posted By bloodIce
Well, having as a file 3 Gbytes of letters for...

Well, having as a file 3 Gbytes of letters for $2.5K does not help you live better, so it is like having an expensive art piece/portrait. Of course if there is one misspell telling you...
Forum: Lone Mersenne Hunters 2016-11-02, 08:51
Replies: 23
Views: 5,291
Posted By bloodIce
The participant 1997rj7 has been spotted before...

The participant 1997rj7 has been spotted before as one returning higher percentage of missed factors:
http://www.mersenneforum.org/showthread.php?p=400546#post400546
At the time we spend most of...
Forum: Lone Mersenne Hunters 2016-07-24, 21:57
Replies: 1,676
Views: 139,572
Posted By bloodIce
Stock bounds for sure (B1=1.1e8). I do not have...

Stock bounds for sure (B1=1.1e8). I do not have access to the machine right now (to pull out the log), but it is probably couple of thousand curves.
Forum: Lone Mersenne Hunters 2016-07-24, 20:43
Replies: 1,676
Views: 139,572
Posted By bloodIce
3607 is down

I thought that sub 10K are impossible to factor, but here it is:
"M3607 has a factor 162160065980366340636967897279169391509046358190713" (~167 bits). Unfortunately, the cofactor is not PRP :smile:.
Forum: Lone Mersenne Hunters 2016-07-03, 17:26
Replies: 1,676
Views: 139,572
Posted By bloodIce
Remember M90679, we are even :smile:. But, if you...

Remember M90679, we are even :smile:. But, if you wish take any of "mine exponents" and find a factor, I will only be happy. Cheers and keep the factors coming.
Forum: Lone Mersenne Hunters 2016-07-02, 06:36
Replies: 1,676
Views: 139,572
Posted By bloodIce
34537 is down

[Sat Jul 2 02:44:21 2016]
ECM found a factor in curve #1191, stage #2
Sigma=8753620462425117, B1=3000000, B2=300000000.
UID: BloodIce/Mjolnir4, M34537 has a factor:...
Forum: Lone Mersenne Hunters 2016-06-26, 21:52
Replies: 1,676
Views: 139,572
Posted By bloodIce
I have checked the remaining cofactors of course...

I have checked the remaining cofactors of course (among the first thing I do after a factor in the lower range). Or do you mean PRP of the factors? I hope mersenne.org has a code to deal with the...
Forum: Lone Mersenne Hunters 2016-06-26, 06:05
Replies: 1,676
Views: 139,572
Posted By bloodIce
two sub-40K down

[Fri Jun 24 20:28:53 2016]
ECM found a factor in curve #203, stage #1
Sigma=61541048953985, B1=3000000, B2=300000000.
UID: BloodIce/Mjolnir4, M35591 has a factor:...
Forum: mersenne.ca 2016-06-14, 13:34
Replies: 44
Views: 6,669
Posted By bloodIce
These are my fault, I am sorry... About 5 years...

These are my fault, I am sorry... About 5 years ago, I just tried to submit factors, to non-prime exponents to James' database and the database accepted them. Later, I agreed in a conversation with...
Forum: Lone Mersenne Hunters 2016-06-08, 05:30
Replies: 1,676
Views: 139,572
Posted By bloodIce
sub-40K down today

Today a sub-40K bites the dust:
[Tue Jun 7 22:10:49 2016]
ECM found a factor in curve #113, stage #1
Sigma=629186646856962, B1=3000000, B2=300000000.
UID: BloodIce/Mjolnir4, M36109 has a factor:...
Forum: Lone Mersenne Hunters 2016-06-07, 07:02
Replies: 1,676
Views: 139,572
Posted By bloodIce
another sub-100K bites the dust

[Mon Jun 6 23:12:20 2016]
ECM found a factor in curve #218, stage #2
Sigma=3267888520893954, B1=3000000, B2=300000000.
UID: BloodIce/URM2, M40423 has a factor:...
Forum: Math 2016-06-05, 07:36
Replies: 127
Views: 15,502
Posted By bloodIce
In the process of double-checking the 900-910M...

In the process of double-checking the 900-910M range by simply factoring every exponent to 64 bits, I did not see any new factor coming bellow TF60 or any newly factored exponent. So I believe that...
Forum: Lone Mersenne Hunters 2016-05-31, 10:09
Replies: 1,676
Views: 139,572
Posted By bloodIce
Yep, a good one. You found it four days after my...

Yep, a good one. You found it four days after my ECM on the exponent, so I had my chance, but did not score. Great, one more is down.
Forum: Math 2016-05-18, 05:56
Replies: 127
Views: 15,502
Posted By bloodIce
Not in the range I pointed. I know it was...

Not in the range I pointed. I know it was pointless, but in the range 900M-906M I tried all exponents to TF64 regardless if they have a lower factor or not. Not to mention that all exponents in the...
Forum: Math 2016-05-17, 20:21
Replies: 127
Views: 15,502
Posted By bloodIce
Thank you very much, GP2! The range actually...

Thank you very much, GP2! The range actually mattered. I am pretty sure that all exponents are "combed" to TF64, but of course some are factored to higher levels. It tells me, that the small factors...
Forum: Math 2016-05-17, 12:41
Replies: 127
Views: 15,502
Posted By bloodIce
GP2, could you check 900M-906M range? All of it...

GP2, could you check 900M-906M range? All of it is factored to TF64 for all exponents. There is only trial factoring done, so there are no Pm1 and ECM factors there. Of course not a single exponent...
Forum: Data 2016-04-05, 18:11
Replies: 8
Views: 1,712
Posted By bloodIce
I think that after noticing a discrepancy one...

I think that after noticing a discrepancy one should always attempt factoring. In this case it was easy to find a factor: 39615513750093690993572647. Does not solve the problem with the misreported...
Forum: PrimeNet 2016-03-09, 10:17
Replies: 151
Views: 8,767
Posted By bloodIce
There is absolutely no sense to re-do anything...

There is absolutely no sense to re-do anything bellow TF59 or soon TF60. That is because of TJAOI's systematic work climbing slowly in the whole exponent space.
From very recently I do something...
Forum: Lounge 2016-02-29, 18:59
Replies: 29
Views: 1,550
Posted By bloodIce
Which is the next exponent, which will produce...

Which is the next exponent, which will produce the 50th Mersenne prime number? (honestly :-), or at least the best estimate )
Forum: Lone Mersenne Hunters 2016-02-25, 14:24
Replies: 1,676
Views: 139,572
Posted By bloodIce
Just a warning, to avoid double-work. For a week...

Just a warning, to avoid double-work. For a week now, I am running curves (B1=3000000) on the following: M33037, M33091, M33151, M38197. I aim of completing the bit-level, so it might take some more...
Showing results 1 to 25 of 173

 
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