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Search: Posts Made By: nordi
Forum: Factoring 2022-05-17, 22:51
Replies: 22
Views: 541
Posted By nordi
If that works out and someone finds a vastly...

If that works out and someone finds a vastly superior way of factoring integers, they can completely take over the blockchain because they now contribute most of the work. Sounds like a bug rather...
Forum: Lone Mersenne Hunters 2022-05-10, 19:23
Replies: 2,132
Views: 312,534
Posted By nordi
Getting lucky again with my P-1 factoring: ...

Getting lucky again with my P-1 factoring:

M12782851 has a 235.159-bit (71-digit) composite (P21+P24+P27) factor: 61645213700098762638579831947213762951673986053039553206940532463429217...
Forum: Lone Mersenne Hunters 2022-05-05, 18:07
Replies: 2,132
Views: 312,534
Posted By nordi
When looking at this result, I was expecting it...

When looking at this result, I was expecting it to be yet another composite factor. Turns out it wasn't:

M12731681 has a 151.792-bit (46-digit) factor:...
Forum: Puzzles 2022-05-03, 14:42
Replies: 21
Views: 1,096
Posted By nordi
Smile And that's exactly what was requested:

And that's exactly what was requested:
Forum: Puzzles 2022-04-29, 20:44
Replies: 21
Views: 1,096
Posted By nordi
OK, so you were looking for something like ...

OK, so you were looking for something like

1e666+1e666j;_*_;_*_;1e666-1e666j;_+1e666j;-1e666+1e666j;_-1e666j;-1e666-1e666j;_+1e666


Or, to make it even shorter and less readable:
...
Forum: Puzzles 2022-04-27, 21:48
Replies: 21
Views: 1,096
Posted By nordi
In your initial post, you suggested that people...

In your initial post, you suggested that people use float('nan') to get a NaN value, but now you say that's forbidden. Please make up your mind.
Forum: Puzzles 2022-04-27, 19:00
Replies: 21
Views: 1,096
Posted By nordi
In Python 2.7, "print" is actually not a...

In Python 2.7, "print" is actually not a function, it is a statement, i.e. a part of the language's grammar. Python 3 changed "print()" to be a function that just happens to be defined by default.
...
Forum: Software 2022-04-06, 22:17
Replies: 566
Views: 41,429
Posted By nordi
Yes, indeed, the FFT size for the smaller...

Yes, indeed, the FFT size for the smaller exponent (which used 80GB RAM) was larger than for the other exponent (which used 40GB RAM). Is that expected behavior?

Apart from the RAM, the only thing...
Forum: Software 2022-04-06, 20:58
Replies: 566
Views: 41,429
Posted By nordi
Not sure if it's related to 30.8 or just a server...

Not sure if it's related to 30.8 or just a server bug with the P-1 GHz-day calculation, but I'm getting less GHz-days for a slightly larger B2 on a slightly larger exponent. See attached screenshot...
Forum: Software 2022-03-19, 22:55
Replies: 566
Views: 41,429
Posted By nordi
The values match pretty well for my Zen 2 and a...

The values match pretty well for my Zen 2 and a 12.4M exponent:

predicted: 0.525
actual: 0.586 = (106.51+157.782)/450.826


[Work thread Mar 19 22:59] P-1 on M12457537 with B1=400000,...
Forum: Software 2022-03-16, 23:01
Replies: 566
Views: 41,429
Posted By nordi
You are greatly under-selling your achievement...

You are greatly under-selling your achievement here. With build 10, I got

[Worker #1 Mar 16 08:23] P-1 on M35419 with B1=2000000000, B2=400000000000000
...
[Worker #1 Mar 16 13:32] Stage 2 init...
Forum: Data 2022-03-14, 19:37
Replies: 134
Views: 8,329
Posted By nordi
Such a list can be generated with the...

Such a list can be generated with the https://www.mersenne.ca/morefactors.php page.

I'm currently working on the 12.4M range for already factored exponents, because they will soon be PRP-checked...
Forum: Software 2022-02-05, 13:14
Replies: 566
Views: 41,429
Posted By nordi
Going from build 9 to build 10 gave me 7% more...

Going from build 9 to build 10 gave me 7% more performance in stage 2, which is very good to have (on top of the fantastic performance it already had).


Just for the record, increasing memory...
Forum: mersenne.ca 2022-01-20, 20:12
Replies: 915
Sticky: mersenne.ca
Views: 119,689
Posted By nordi
Thanks, looks much better now! 726064763 still...

Thanks, looks much better now! 726064763 still has false positives for TF, though.
Forum: mersenne.ca 2022-01-20, 19:29
Replies: 915
Sticky: mersenne.ca
Views: 119,689
Posted By nordi
The "Missed Factor" feature seems to still be a...

The "Missed Factor" feature seems to still be a bit buggy:

https://www.mersenne.ca/exponent/12133333
Those newly discovered factores require larger B2 values than 400k, so they were not missed by...
Forum: Lounge 2022-01-17, 23:05
Replies: 112
Views: 5,393
Posted By nordi
In hard mode you have to use all hints you have...

In hard mode you have to use all hints you have for the next guess, you can activate it in the settings. So that trick does not workfor me.
Forum: Lounge 2022-01-17, 13:41
Replies: 112
Views: 5,393
Posted By nordi
Solved it in 3 today. Got very lucky on my first...

Solved it in 3 today. Got very lucky on my first guess, not so lucky on the second.


share
shore
shire
Forum: mersenne.ca 2022-01-15, 20:14
Replies: 915
Sticky: mersenne.ca
Views: 119,689
Posted By nordi
And for the paper mathwiz was referencing, the...

And for the paper mathwiz was referencing, the exponents are
1009,1093,1109,1117,1123,1129,1151,1153,1171,1193
as listed on pages 16 to 17.
Forum: mersenne.ca 2022-01-15, 19:57
Replies: 915
Sticky: mersenne.ca
Views: 119,689
Posted By nordi
M991: mersenneforum.org users, see...

M991: mersenneforum.org users, see https://www.mersenneforum.org/showthread.php?p=404290#post404290
M1061: Greg Childers, see M1061.pdf (https://physics.fullerton.edu/gchilders/M1061.pdf)

...
Forum: Data 2022-01-15, 15:28
Replies: 134
Views: 8,329
Posted By nordi
You mean in order to potentially find another...

You mean in order to potentially find another factor in stage 2? Yes, it is (https://www.mersenne.ca/exponent/11956333).
Forum: Lone Mersenne Hunters 2022-01-04, 12:42
Replies: 2,132
Views: 312,534
Posted By nordi
M12086257 has a 232.056-bit (70-digit) composite...

M12086257 has a 232.056-bit (70-digit) composite (P21+P22+P28) factor: 7175325903126100642770883886258989157868691603487785881027652989293479 (https://www.mersenne.ca/M12086257)...
Forum: Data 2021-12-28, 17:32
Replies: 7
Views: 889
Posted By nordi
That was super lucky! The first time since 2014...

That was super lucky! The first time since 2014 that a new record gets set. Congrats to Alpertron and Xyzzy!


And we can actually try our luck a bit more: The P-1 can still be extended and TF...
Forum: Data 2021-12-27, 09:34
Replies: 7
Views: 889
Posted By nordi
Awesome! Until a few days ago, there were only 3...

Awesome! Until a few days ago, there were only 3 such numbers, and all their factors had been found in 2014 or earlier. And now we have two more within two weeks! Are you still going to do P-1 stage...
Forum: Data 2021-12-17, 01:37
Replies: 108
Views: 6,084
Posted By nordi
I would see the positive side here: The fact that...

I would see the positive side here: The fact that this factor was found by ECM shows that no in-depth P-1 was run on this number, and likely other numbers in that range. At least not prior to October...
Forum: Lone Mersenne Hunters 2021-12-17, 00:12
Replies: 2,132
Views: 312,534
Posted By nordi
This one was found by ramgeis, not by me, but I'm...

This one was found by ramgeis, not by me, but I'm still fond of it:


M3356318939 (https://www.mersenne.ca/exponent/3356318939) has a 84.652-bit (26-digit) factor: 30392108107422786794726689

...
Showing results 1 to 25 of 118

 
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