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Search took 0.34 seconds. Search: Posts Made By: axn
Forum: Lounge 2021-04-21, 14:39
Replies: 1,351
Views: 87,138
Posted By axn
And you have fallen foul of my pet peeve. While...

And you have fallen foul of my pet peeve. While technically "data" is plural and "datum" is singular, modern usage of data is as an uncountable noun, and hence should be "data is ...". No one uses...
Forum: And now for something completely different 2021-04-21, 08:08
Replies: 10
Views: 274
Posted By axn
Cool. BTW, mprime does have the ability to...

Cool.

BTW, mprime does have the ability to exit when out of work (conveniently called ExitWhenOutOfWork). Not sure if that was done for other platforms as well.
Forum: Software 2021-04-21, 07:58
Replies: 154
Views: 14,732
Posted By axn
Great. Thanks for the confirmation.

Great. Thanks for the confirmation.
Forum: Software 2021-04-21, 04:17
Replies: 154
Views: 14,732
Posted By axn
Is the server set up to handle P+1 result...

Is the server set up to handle P+1 result submissions (both "no factor" as well as "factor found")?

Is mersenne.ca?
Forum: And now for something completely different 2021-04-21, 02:26
Replies: 10
Views: 274
Posted By axn
How does LLR performance compare with P95/mprime...

How does LLR performance compare with P95/mprime on this type? Do you have any data?
Forum: Software 2021-04-19, 17:17
Replies: 7
Views: 131
Posted By axn
I don't think P95 actually stops, but rather does...

I don't think P95 actually stops, but rather does the writes on another thread. I might be wrong about this.
Forum: Miscellaneous Math 2021-04-19, 05:58
Replies: 26
Views: 543
Posted By axn
If you don't make ispseudoprime do a BPSW test,...

If you don't make ispseudoprime do a BPSW test, the timings are comparable.
? #
timer = 1 (on)
? qfbprimeform(9, 2^44497-1);
time = 8,043 ms.
? ispseudoprime(2^44497-1, 1);
time = 8,645 ms....
Forum: Miscellaneous Math 2021-04-18, 07:39
Replies: 26
Views: 543
Posted By axn
I don't know what "the test" is but: ?...

I don't know what "the test" is but:
? kronecker(9, 25)
%1 = 1

Do you even know what qfbprimeform is supposed to do?
? ?qfbprimeform
qfbprimeform(x,p): returns the prime form of discriminant...
Forum: Miscellaneous Math 2021-04-18, 07:14
Replies: 26
Views: 543
Posted By axn
No. Composite numbers as well. However, it must...

No. Composite numbers as well. However, it must be relatively prime.

? kronecker(9,14)
%1 = 1
? kronecker(9,15)
%2 = 0
? kronecker(9,16)
%3 = 1
? kronecker(9,17)
%4 = 1
Forum: Miscellaneous Math 2021-04-18, 06:29
Replies: 26
Views: 543
Posted By axn
Your check is 9^((Mp-1)/2) == 1 (mod Mp) or...

Your check is 9^((Mp-1)/2) == 1 (mod Mp) or alternately, 9^((Mp+1)/2)==9 (mod Mp).

This is nothing but a Euler pseudoprimality test (https://en.wikipedia.org/wiki/Euler_pseudoprime)

Since 9 is...
Forum: PrimeNet 2021-04-16, 14:12
Replies: 9
Views: 305
Posted By axn
Yes, the factor of 2 is based on the 2 LL tests...

Yes, the factor of 2 is based on the 2 LL tests needed to conclusively prove an exponent is composite. With PRP+CERT, the factor of 2 should become 1.03 (or something similar).
Forum: Software 2021-04-15, 08:02
Replies: 154
Views: 14,732
Posted By axn
Why not have just three workers and change their...

Why not have just three workers and change their worktype as and when you want to switch over? Should be just as easy as bringing workers up/down.

Or ... Have two instances of P95 and keep PRP...
Forum: Software 2021-04-15, 05:48
Replies: 154
Views: 14,732
Posted By axn
Then why not have just 3 workers (or 2 workers)?...

Then why not have just 3 workers (or 2 workers)? You're putting the program in an impossible situation. It'd be best to just turn off the benchmark altogether.
Forum: Miscellaneous Math 2021-04-15, 02:21
Replies: 9
Views: 228
Posted By axn
This might or might not work. If someone could...

This might or might not work. If someone could find a counterexample, that would obviously disprove your claim. Yet, doing test after test of successful confirmation will not get you any closer to...
Forum: Data 2021-04-15, 02:15
Replies: 17
Views: 534
Posted By axn
The advantage is not that we know to include 2p...

The advantage is not that we know to include 2p in the stage 1 powering routine, but rather, the part that needs to be smooth ((f-1)/2p) is much smaller and therefore higher probability of success...
Forum: Cloud Computing 2021-04-15, 02:11
Replies: 1,142
Views: 98,436
Posted By axn
I don't know the reason you're not getting any...

I don't know the reason you're not getting any GPU, but I doubt it is permanent.

Keep trying every day; eventually you will get one.
Forum: PrimeNet 2021-04-14, 16:46
Replies: 5
Views: 89
Posted By axn
The server is aware of certain machines...

The server is aware of certain machines registered under your account. It has certain expectations of how much these machines can produce. It merely lists what % of expected work was actually...
Forum: PrimeNet 2021-04-14, 14:47
Replies: 3
Views: 73
Posted By axn
You have done 8959 Gd worth of work, of which...

You have done 8959 Gd worth of work, of which 7640 (85.3%) is LL/PRP, of which all 7640 is from PRP and 0 from LL.
You also have 141 from TF, 218 from P-1, 935 from LL-D, and so on.

You are...
Forum: Data 2021-04-14, 14:22
Replies: 17
Views: 534
Posted By axn
If f=5 (mod 6) and f+1 is smooth, 2/7 seed will...

If f=5 (mod 6) and f+1 is smooth, 2/7 seed will find it.
If f=1 (mod 6) and f-1 is smooth, then also 2/7 will find it
If f=3 (mod 4) and f+1 is smooth, 6/5 will find it
If f=1 (mod 4) and f-1 is...
Forum: Data 2021-04-14, 03:51
Replies: 17
Views: 534
Posted By axn
There are going to be some stubborn sub-ranges in...

There are going to be some stubborn sub-ranges in the 10M-40M region where P-1 and TF have done their part, and only way forward is to do deeper P-1 or TF (ECM being too inefficient) which will be...
Forum: Data 2021-04-14, 03:41
Replies: 17
Views: 534
Posted By axn
Doubtful that P+1 will breakeven for wavefront....

Doubtful that P+1 will breakeven for wavefront. Like, say, there might be a 1% probability, but costs more than 1% of PRP test (made-up numbers for illustrative purpose).
It is more costly than P-1,...
Forum: Data 2021-04-14, 01:44
Replies: 17
Views: 534
Posted By axn
Exactly the same. Just, instead of factoring f-1...

Exactly the same. Just, instead of factoring f-1 (and ignoring the forced "2p"), you factor f+1. B1 is second-largest factor, B2 is largest.
Forum: Math 2021-04-13, 14:23
Replies: 10
Views: 4,922
Posted By axn
No.

No.
Forum: Software 2021-04-11, 17:30
Replies: 7
Views: 174
Posted By axn
ETA is accurate, but since it is based on the...

ETA is accurate, but since it is based on the current iteration time, it can go up and down.
Status is based on the expected performance of the CPU. It doesn't need the test to be running...
Forum: Lounge 2021-04-11, 01:57
Replies: 1,711
RIP
Views: 150,763
Posted By axn
Wrong. ...

Wrong.

https://en.wikipedia.org/wiki/Succession_to_the_British_throne#Current_rules
https://en.wikipedia.org/wiki/Succession_to_the_British_throne#Current_line_of_succession
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