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Old 2012-05-15, 02:37   #1299
Dubslow
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Quote:
Originally Posted by PageFault View Post
There is another observation. M57078733 just started its run and (as normal) the client prints "Using Pentium4 Type-0 FFT length 3M, Pass1=768, Pass2=4K". For the M83xxxxx it used a Core2 FFT (details were not recorded). Of course, if a particular code path is faster, the client should check and use the best one. I'm wondering if anyone else has seen this behavior.
Whenever he writes new FFTs, George times all code paths on all architectures, and chooses the fastest one regardless of what the name of the FFT is. If at low expos Core2 FFTs are chosen, that means they are faster than the Pentium4 FFTs, even on a PentiumD (which is, as I recall, what you are using).
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Old 2012-05-17, 15:48   #1300
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Quote:
Originally Posted by James Heinrich View Post
Found one more (bold), but this time in another range:
M6,802,123, M6,853,937, M6,853,967, M6,854,297, M6,888,719, M6,935,129, M6,937,501, M8,855,257
Found another one for your list: 9,914,951
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Old 2012-05-17, 16:21   #1301
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Quote:
Originally Posted by harlee View Post
Found another one for your list: 9,914,951
There's now a proper list on the site: http://mersenne-aries.sili.net/p1missed.php
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Old 2012-05-17, 16:50   #1302
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Quote:
Originally Posted by harlee View Post
Found another one for your list: 9,914,951
your link says http://http//
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Old 2012-05-18, 11:39   #1303
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Quote:
Originally Posted by James Heinrich View Post
There's now a proper list on the site: http://mersenne-aries.sili.net/p1missed.php
This list show quite a lot of NF-PM1 entries, also from the recent past. For example:
http://mersenne-aries.sili.net/expon...etails=1043639
http://mersenne-aries.sili.net/expon...etails=2000807
http://mersenne-aries.sili.net/exponent.php?factordetails=18455
http://mersenne-aries.sili.net/exponent.php?factordetails=445651137737144960137768908774222013799
http://mersenne-aries.sili.net/expon...=7411839124463

Is there a problem in prime95 finding some of the factors if some special conditions occur (which?)?


On the other hand, James, could you also scan your factor repository for factors found by P-1 that should have been found by TF, but have been reported NF? If there are any, this could be used to reveal corner-case problems in mfakto/mfaktc.
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Old 2012-05-18, 13:00   #1304
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Quote:
Originally Posted by Bdot View Post
This list show quite a lot of NF-PM1 entries, also from the recent past.
Is there a problem in prime95 finding some of the factors if some special conditions occur (which?)?
The only "problem" in this case is that the factors were already known, and put into the "known factors" list of the Pminus1= worktodo line so that Prime95 won't break out after re-finding these known factors in stage1, but continue to run to the bounds you set. Not something that most users will ever do or know about, but a few people have fun playing around with such things.

I have adjusted the logic generating that page to exclude any factor that was already known before the P-1 test was run, and it works better now.
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Old 2012-05-18, 13:32   #1305
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Quote:
Originally Posted by James Heinrich View Post
The only "problem" in this case is that the factors were already known, and put into the "known factors" list of the Pminus1= worktodo line so that Prime95 won't break out after re-finding these known factors in stage1, but continue to run to the bounds you set. Not something that most users will ever do or know about, but a few people have fun playing around with such things.

I have adjusted the logic generating that page to exclude any factor that was already known before the P-1 test was run, and it works better now.
Thanks, this also cut the list in half ...
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Old 2012-05-18, 18:05   #1306
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Quote:
Originally Posted by harlee View Post
Found another one for your list: 9,914,951
Quote:
Originally Posted by bcp19 View Post
your link says http://http//
Corrected link: 9,914,951

Last fiddled with by cheesehead on 2012-05-18 at 18:07
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Old 2012-05-20, 02:22   #1307
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Another one nailed in Stage 1:

Code:
[Sat May 19 17:23:16 2012]
P-1 found a factor in stage #1, B1=610000.
UID: PageFault/boxen_01, M57111113 has a factor: 46695916625813440426631, AID:
I had a feeling this one had a factor ... brainfart maybe, or too much whisky ... all those 111's ...

Lets see about a range I grabbed by manual means around M70000000. Much slower, but I got tight groups of nearby exponents. I like those, in the past I used to game on blocks of factor rich exponents ... let's see what I find.
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Old 2012-05-28, 02:42   #1308
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Default can't get P-1 work in 45.xxx.xxx to 51.xxx.xxx range?

Any particular reason why P-1 manual assignments in the 45.xxx.xxx to 51.xxx.xxx range are not available?

Without specifying an exponent range, I got P-1 assignments between 52.9xx.xxx and 56.2xx.xxx (two sets of 5 assignments).

When exponent range 44.000.000 to 45.999.999 specified, I got response "No large Mersenne P-1 factoring assignments found." and double-check assignments (another 5 assignments).

There would seem to be plenty of assignments in the requested range (scroll right to "Available").
Code:
PrimeNet Activity Summary 2012-05-28 02:00 UTC

----------=-----=-- | -----=-----=-----=-----=----- | -----=-----=-----=----- | -----=-----=-----=----- |
  Exponent Range    | Composite  | Status Unproven  |        Assigned         |        Available        |
   Start   Count  P |   F   LL-D | LL   LLERR NO-LL |  TF    P-1   LL   LL-D  |  TF    P-1   LL   LL-D  |
----------=-----=-- | -----=-----=-----=-----=----- | -----=-----=-----=----- | -----=-----=-----=----- |

  40000000 57102    | 35705   470 20922           5 |                44     4 |                   20879 |
  41000000 56864    | 35539   348 20970           7 |                66       |                   20911 |
  42000000 56915  1 | 35693   314 20889     2    16 |                62     4 |                   20841 |
  43000000 56849  1 | 35507   338 20959     1    43 |     1     1    80    26 |                   20895 |
  44000000 56776    | 35867   308 20422     4   175 |    10   326   220    38 |                   20010 |
  45000000 56893    | 35795   236 20083    43   736 |         561   818     2 |         915       18569 |
  46000000 56640    | 35537   229 19732    48  1094 |     1        1153    32 |        1057       18623 |
  47000000 56451    | 35528   162 19217    49  1495 |     1        1564     1 |        1290       17905 |
  48000000 56387    | 35473   212 18161   119  2422 |    11        2563     4 |        1930       16198 |
  49000000 56603    | 35800   713 16482   264  3344 |     8        3597     2 |         514    30 15938 |
 
  50000000 56360    | 35758    94 16241    83  4184 |    31     1  4207     6 |          82    47 16136 |
  51000000 56349    | 36142    62 12932   107  7106 |    14     3  7147       |           7    63 12916 |
  52000000 56209    | 35844    28 11605    77  8655 |   125    50  8392       |          27   181 11569 |
  53000000 56151    | 35996    29  8175    84 11867 |    97     2 11693       |           4   195  8168 |
  54000000 55997    | 35800    12  6320    54 13811 |  3464   159  9937       |          89   321  6227 |
  55000000 56130    | 35636     7  4561    24 15902 |  6327   501  9108       |          81    27  4475 |
  56000000 56105    | 35338     6  4290    34 16437 |  5301   651 10433       |         108    82  4192 |
  57000000 55901    | 35138     1  2174    19 18569 |  7286   421 10918       |     1    49    16  2082 |
  58000000 55978    | 34898     3  1386    55 19636 |  7457   357 11708       |         277    33  1277 |
  59000000 55801    | 34552         136     1 21112 |  4241    55  2298       |       14400   134   135 |
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Old 2012-05-28, 02:53   #1309
Prime95
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Quote:
Originally Posted by S34960zz View Post
There would seem to be plenty of assignments in the requested range
I think those P-1 assignments are only needed for double-checking. The server currently hands out P-1 assignments for exponents needing a first-time LL test.
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