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Search: Posts Made By: fivemack
Forum: Lounge 2021-03-08, 10:42
Replies: 43
Views: 2,731
Posted By fivemack
I did manage to get to the summit of Kilimanjaro,...

I did manage to get to the summit of Kilimanjaro, though it was probably the most arduous thing I've ever done: there's a couple of hours gap in my memory from the middle of the ascent to the crater...
Forum: NFS@Home 2021-02-04, 15:30
Replies: 26
Views: 4,720
Posted By fivemack
6400 curves at B1=260M found no factor for L2250;...

6400 curves at B1=260M found no factor for L2250; I've queued up the job while post-processing a further 3840 curves. It looks rather low yield even for an SNFS-250 quartic, but 300MQ ought to get...
Forum: NFS@Home 2021-01-30, 11:19
Replies: 8
Views: 1,326
Posted By fivemack
L2995A done

Fri Jan 29 16:21:09 2021 p70 factor: 1766931035816663530033036837955675983886671972196464946006728364437711
Fri Jan 29 16:21:09 2021 p142 factor:...
Forum: NFS@Home 2021-01-29, 08:52
Replies: 26
Views: 4,720
Posted By fivemack
The few thousand curves found a factor, I've...

The few thousand curves found a factor, I've deleted the job and started running curves on L2250
Forum: NFS@Home 2021-01-21, 15:27
Replies: 26
Views: 4,720
Posted By fivemack
I've put L3065B (SNFS quartic, no small factor...

I've put L3065B (SNFS quartic, no small factor known) onto the 16fs queue. Not quite sure how much ECM has been done on it; it won't get to the front of the queue any time soon so I'll run a few...
Forum: NFS@Home 2021-01-21, 15:17
Replies: 8
Views: 1,326
Posted By fivemack
L2995A linalg started, should be done by end of...

L2995A linalg started, should be done by end of January (32M matrix at density 100)
Forum: Factoring 2021-01-03, 00:20
Replies: 512
Views: 83,883
Posted By fivemack
L1513 finished

202-digit GNFS done locally


Tue Aug 4 13:05:29 2020 R0: -1028224595046037683938542391736748085046
Tue Aug 4 13:05:29 2020 R1: 4848130132767804170091793
Tue Aug 4 13:05:29 2020 A0:...
Forum: Information & Answers 2020-11-17, 12:43
Replies: 27
Views: 3,169
Posted By fivemack
Did you (or prime.txt) do anything non-obvious...

Did you (or prime.txt) do anything non-obvious with assignment of CPU cores to workers? If the old system was running one worker on 012345 and the other on 6789ab, and that's stayed the same for the...
Forum: Miscellaneous Math 2020-10-22, 13:33
Replies: 6
Views: 1,165
Posted By fivemack
Using a gigahertz-month of compute for something...

Using a gigahertz-month of compute for something which can sensibly be asserted by inspection would get probably ruder remarks from you and RDS :)

(my housemate had found a tweet getting excited...
Forum: Miscellaneous Math 2020-10-22, 10:47
Replies: 6
Views: 1,165
Posted By fivemack
Primes made mostly of nines

10^10000 - 10^8668 - 1 is a pseudoprime; can I assert that it's prime because we've got a very boring factorisation of 86.68% of n+1 ?
Forum: NFS@Home 2020-10-16, 08:30
Replies: 20
Views: 4,132
Posted By fivemack
L1510 complete

Fri Oct 16 06:41:07 2020 p93 factor: 768278079468147872006161615793478445262891405249833298882663471356153278846031859145179203921
Fri Oct 16 06:41:07 2020 p112 factor:...
Forum: NFS@Home 2020-10-13, 14:58
Replies: 112
Views: 23,518
Posted By fivemack
L2004 complete

Tue Oct 13 14:12:17 2020 p82 factor: 5723280937158349169817962771791765516670683427993154997001889277215732479450609521
Tue Oct 13 14:12:17 2020 p167 factor:...
Forum: NFS@Home 2020-10-11, 09:28
Replies: 26
Views: 4,720
Posted By fivemack
Thank you so much!

Thank you so much!
Forum: NFS@Home 2020-10-10, 10:16
Replies: 20
Views: 4,132
Posted By fivemack
L1510 linalg started, should be done 16 October...

L1510 linalg started, should be done 16 October evening
Forum: NFS@Home 2020-10-09, 10:11
Replies: 26
Views: 4,720
Posted By fivemack
So, the easiest outstanding Fibonacci quartic is...

So, the easiest outstanding Fibonacci quartic is L2995A; difficulty 250.37

http://factordb.com/index.php?showid=1100000000216955784

...
Forum: NFS@Home 2020-10-09, 10:05
Replies: 26
Views: 4,720
Posted By fivemack
OK, my initial relation-sampling was over too...

OK, my initial relation-sampling was over too small a region; I'm seeing roughly one relation per Q for


n:...
Forum: NFS@Home 2020-10-06, 09:40
Replies: 112
Views: 23,518
Posted By fivemack
L2004 progress

Tue Oct 6 05:33:39 2020 matrix is 28895048 x 28895460 (12137.1 MB) with weight 2859316727 (98.95/col)


ETA is 15 October
Forum: NFS@Home 2020-10-05, 11:36
Replies: 20
Views: 4,132
Posted By fivemack
Thanks for looking at that; my script was clearly...

Thanks for looking at that; my script was clearly misbehaving somewhere. Rerunning, I'm seeing 405321355 relations of which 405266903 are in the correct form, 312.9M unique, singleton removal...
Forum: NFS@Home 2020-10-04, 20:29
Replies: 26
Views: 4,720
Posted By fivemack
Would anyone be up for say 30k curves at B1=260M...

Would anyone be up for say 30k curves at B1=260M on F1565

...
Forum: NFS@Home 2020-10-04, 20:24
Replies: 20
Views: 4,132
Posted By fivemack
That's interesting; the status page...

That's interesting; the status page https://escatter11.fullerton.edu/nfs/crunching_fs.php says there are 390 million relations, I only see 311875466 relations of which about 249650000 unique and...
Forum: NFS@Home 2020-10-04, 10:11
Replies: 20
Views: 4,132
Posted By fivemack
I'm doing an initial filtering run on L1510 today.

I'm doing an initial filtering run on L1510 today.
Forum: NFS@Home 2020-10-01, 09:01
Replies: 112
Views: 23,518
Posted By fivemack
Starting L2004 post-processing today

Starting L2004 post-processing today
Forum: Factoring 2020-09-30, 16:03
Replies: 40
Views: 17,306
Posted By fivemack
The smallest 400-bit number with two 200-bit...

The smallest 400-bit number with two 200-bit prime factors is

0x98B1A3CA31877A7140FEFFA30608FBAB17232646BEC3BAA167 * 0xD699697AC5B27CD0A75D35F9E19320D82A4F4101B550C65E97 = 2^399+198081

(about...
Forum: Abstract Algebra & Algebraic Number Theory 2020-09-27, 08:10
Replies: 8
Views: 3,379
Posted By fivemack
An oddity of this form

It's absolutely obvious in retrospect, but, looking at the results of a match-up-large-primes run, if we have t^2+1=pq then (t+kq)^2+1 will also be divisible by q; and we may occasionally be lucky...
Forum: Msieve 2020-09-26, 22:53
Replies: 2
Views: 1,983
Posted By fivemack
I had a similar problem on ubuntu-20.04 (again,...

I had a similar problem on ubuntu-20.04 (again, this is the update which introduced gmp-6.2); I had to remove the lines


#if GMP_LIMB_BITS == 64
dest->_mp_d[0] = src;
...
Showing results 1 to 25 of 1000

 
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