Posts by VictordeHollander

1)
Message boards :
Questions/Problems/Bugs :
Outage due to server update
(Message 1888)
Posted 12 Jun 2018 by VictordeHollander Post: Most of the issues after the server update have been fixed. The issues that remains is the relations are not saved in their usual location for the post-processor people. |

2)
Message boards :
Questions/Problems/Bugs :
Any News?
(Message 1887)
Posted 12 Jun 2018 by VictordeHollander Post: Sorry Robert, but the 16e queue is managed by Greg himself and he is a very busy man. You do have a point that communication for the 16e queue could be improved (for the 14e and 15e the status pages are well maintained by Tom and a few others). |

3)
Message boards :
Questions/Problems/Bugs :
Outage due to server update
(Message 1879)
Posted 5 Jun 2018 by VictordeHollander Post: You may have noticed the server has been acting up the last couple of days. This was due to a server update. It included an update to Ubuntu 16.04 LTS, MySQL 5.7 and PHP 7, which required an upgrade of the BOINC code and fixing numerous custom files. More info: http://mersenneforum.org/showthread.php?t=22437 |

4)
Message boards :
Questions/Problems/Bugs :
RAM, runtime and credits
(Message 1878)
Posted 5 Jun 2018 by VictordeHollander Post: We want people to run the 15e and 16e siever for the (leading edge) big factorizations, the 14e is not really that interesting. Also the 14e requires a lot of effort/time from the post-processors people (relatively speaking). The extra credits are for the higher memory use and hopefully bias people towards the 16e. |

5)
Message boards :
NFS Discussion :
Factoring Lucas/Fibonacci numbers
(Message 1621)
Posted 6 Dec 2015 by VictordeHollander Post: F1415 (15e siever) SNFS(236) prp63 factor: 703747967079103785555586774981303013102152381890476035037826061 prp174 factor: 106566721576496287067870961426304639399877346688737247908112975618116157769605593789289749500610860207534209900603129548233550352182201592522010012594460487455738863228718301 Thanks to M. Vang for doing the post-processing and to all who contributed CPU-cycles. F2145 (14e siever) GNFS(171) prp75 factor: 567884411485455076613713834423034797343371558396358459401932772123099034821 prp96 factor: 389405627780364499759336865169250367148430992742093329546150486605821963974304803234775286115121 Logs can now be found by clicking on the links in the comments on the detailed siever stats pages. L1397 is successfully sieved and M. Vang will do the post-processing, so expect those factors in 2 weeks or so. F1297 is now queued on the 15e siever and should start sieving in the next month. |

6)
Message boards :
NFS Discussion :
Factoring Lucas/Fibonacci numbers
(Message 1601)
Posted 20 Oct 2015 by VictordeHollander Post: F1405 is fully factored p58 factor: 2760658868161752397151556084505052457146474924423164947541 p63 factor: 155916003251865463312050460882181765664475933822047142492769161 p115 factor: 3708806696759426498601784197838963030603968213288115313873091782112769996865115868199195740302996516019045694936701 Thanks to Tom Womack for doing the post-processing.Log can be found here: http://mersenneforum.org/showpost.php?p=412844&postcount=414 F1415 is now being post-processed by Mike (Xyzzy), so I expect those factors in a week or two. |

7)
Message boards :
Questions/Problems/Bugs :
270 Error Tasks in last 4 Days
(Message 1595)
Posted 30 Sep 2015 by VictordeHollander Post: Morgan, from your error report: "Maximum elapsed time exceeded", are the task running longer than normal or did you restart them often? |

8)
Message boards :
NFS Discussion :
Factoring Lucas/Fibonacci numbers
(Message 1582)
Posted 2 Sep 2015 by VictordeHollander Post: F1405 en F1415 are now queued on the 15e siever, it might be a while before you receive workunits. First there are a XYYXF (SNFS 261) and an Aliquot (GNFS194) to be done. |

9)
Message boards :
News :
16e status updated
(Message 1556)
Posted 16 Jul 2015 by VictordeHollander Post: The Fibonacci and Lucus factorizations of the 15e I sent some time ago, I believe Marin has updated them in his tables. |

10)
Message boards :
NFS Discussion :
Factoring Lucas/Fibonacci numbers
(Message 1524)
Posted 25 Apr 2015 by VictordeHollander Post: F192910300516606249308141095598669371520434248238291636653606335488183012436994935752953371757047949189798215387969019601812876886691744501927812171448169720474731533243635932677247261709 (182 digits) diff: SNFS(269) Sieving: NFS@home 15e Post-processing: Victor de Hollander 15.5 GB (compressed files) 29.1 GB (uncompressed relations) 255,158,127 (raw) relations 188,124,378 unique relations Target density=125 Linear Algebra matrix is 16,110,488 x 16,110,713 (7497.8 MB) ~209 hours on 4 cores 3770k Square Root Phase Factors found on dependency 1 prp82 factor: 2205948162915930188728253758406230768089063035987047653868064633322223630864596833 prp100 factor: 4669428221120836052207901829071262580709954000445036139624291939756122352739143892182753698617571373 1h14m single core 3770k |

11)
Message boards :
NFS Discussion :
Factoring Lucas/Fibonacci numbers
(Message 1522)
Posted 15 Apr 2015 by VictordeHollander Post: F1391898487023065726723189540642956262590085814279936675776451664374797802741696562456512201935536886671275947629205127678159826956392082308760427673583262603402456475511508884856558536492619311219182139177037614082243851762758680696577317068647481 (243 digits) diff: SNFS(269) Sieving: NFS@home 15e Post-processing: Victor de Hollander Filtering 15.4 GB (compressed file) 28.9 GB (uncompressed relations) 251,229,599 (raw) relations 186,465,749 unique relations Target density 115 (125 and 120 failed) 4-5 hours on a single core of a 3770k Linear Algebra matrix is 16,098,260 x 16,098,485 (6963.9 MB) ~197 hours on 4 cores of a 3770k Square Root Phase Factors found on dependency 2 prp104 factor: 45457115500676341470273729401976620625732310534270877739621497116065657773353091084189122359991545865757 prp140 factor: 19765596940535270661728219213113463208044710605534270512002125208706350605197723322802462542175970718338613928177957788759622716460576707533 2 hours on a single core of a 3770k |

12)
Message boards :
NFS Discussion :
Factoring Lucas/Fibonacci numbers
(Message 1521)
Posted 13 Apr 2015 by VictordeHollander Post: The composite cofactor of F1941 was the product of 66-digit and 167-digit prime numbers: P66=422038518557284382699679255814142222984522189008184457146957964617 P167=59907677831658702619810227141358693081586515127665495082811277179300789170066104213800373278422402100771262900719102341507021261326728863763864368894505269927632119857 The 16e V5 siever was used and the factorization completed on March 2. The factors have been reported to the Fibonacci and Lucas Factorizations page. |

13)
Message boards :
NFS Discussion :
Factoring Lucas/Fibonacci numbers
(Message 1518)
Posted 10 Apr 2015 by VictordeHollander Post: Tom Womack finished post-processing of F1917: http://mersenneforum.org/showpost.php?p=399821&postcount=139 F191712822859769061451024424290844490631828441395701506931406973666464310190719409306314478962383853872919527764814229341267015851996696775218179889438783027795678873944497977278314641553094083250475742093211835117 (209 digits) 245,365,882 (raw) relations 184,529,977 unique relations Target Density 120 matrix is 15735827 x 15736051 (7135.3 MB) 173 hours on a 4 cores 4770k Factors found on dependency 1 prp97 factor: 5154941018590613095470313627520233466354285373838297357573059243702655535561820405691535789361317 prp112 factor: 2487489133787855759937441100469924513133304968678686933166675460244639906134920171933200459145426861256159391401 1 hour 14 min on 1 core of a 4770k Thanks to everybody who helped sieving and Tom Womack for post-processing. |

14)
Message boards :
NFS Discussion :
Factoring Lucas/Fibonacci numbers
(Message 1515)
Posted 5 Apr 2015 by VictordeHollander Post: How much memory does this factorization taking? With matrices of 7-9GB, msieve uses 10-13GB RAM while doing the linear algebra. Add a GB or two for the operating system and you understand why 16GB is needed. |

15)
Message boards :
NFS Discussion :
Factoring Lucas/Fibonacci numbers
(Message 1514)
Posted 5 Apr 2015 by VictordeHollander Post: Another one finished today: Fibonacci(1289)4132728977940963217361272530839994679608041769590746873740785092982818194076513395973317344423046827409892959118806400842320479435498780623348499956715868270786476953668756658286987615356118568389423987711601967454549387703657998763053 (235 digits) SNFS(269) Sieving: NFS@home 15e Post-processing: Filtering 15.1 GB (compressed file) 28.5 GB (uncompressed relations) 247,430,034 (raw) relations 178,384,144 unique relations Target density 125 (failed) and 120 4-5 hours on a single core of a 3770k Linear Algebra matrix is 18800107 x 18800332 (8468.0 MB) ~296 hours on 4 cores of a 3770k Square Root Phase Factors found on dependency 1 prp56 factor: 11199326000261964507084574553000604250472428321503396841 prp180 factor: 369015865583722998868614496652293369306619478644462527427026126678548435718377809903317086020779491351201605163928373222077454728486053400528148387932508883516487010337581815015333 1.5 hours on a single core of a 3770k |

16)
Message boards :
NFS Discussion :
Factoring Lucas/Fibonacci numbers
(Message 1511)
Posted 25 Mar 2015 by VictordeHollander Post: Fibonacci(1273) 197607181320763856728032145379539823934140263189304269275796412883221248578560933747669916096072379103143902440937785591275192958547589464937484015752073553526688302241413695388341584358013082757224542939861232516818180577 (222 digits) Poly SNFS(266) Sieving: NFS@home 15e (you!)Post-processing: Filtering 15.2 GB (compressed file) 28.8 GB (uncompressed relations) 250,493,906 (raw) relations 186,438,142 unique relations Target density 125 Took 3 hours on a single core of a 3770k Linear Algebra matrix is 15,871,614 x 15,871,839 (7360.9 MB) Took 204 hours on 4 cores of a 3770k Square Root Phase Factors found on dependency 1 prp110 factor: 94554702678729108237561620220321830812445435410500398855200601202285589063658198434677220743475953602164370321 prp112 factor: 2089871531743680136145711450739785875555574194315590496625333744238935416215523170400127354304118909834153574737 Took 1 hour on a single core of a 3770k |

17)
Message boards :
NFS Discussion :
Factoring Lucas/Fibonacci numbers
(Message 1484)
Posted 11 Feb 2015 by VictordeHollander Post: Fib(1277) Linear algebra approximately 299 hours on 4 cores of a 3770k Square Root Phase Factors found on dependency 2 prp96 factor: 275164198889975646704592158782170875786498595918766178531816232262038590545804360497024530701073 prp150 factor: 494209535958311884476480645319598771703342347015656651911184747169862444536393208817036966876914456200245628488446174760332525350754036004892880322177 2 hour 46 min on a single core of a 3770k |

18)
Message boards :
NFS Discussion :
5748.1537 factors
(Message 1481)
Posted 30 Jan 2015 by VictordeHollander Post: For the record C170_5748_1537 means: Remaining Composite (C) with 170 digits of Aliquot sequence 5748 at index 1537. |

19)
Message boards :
NFS Discussion :
Factoring Lucas/Fibonacci numbers
(Message 1476)
Posted 25 Jan 2015 by VictordeHollander Post:
Correction: 246 hours I forgot to add 59 hours after a resume |

20)
Message boards :
NFS Discussion :
Factoring Lucas/Fibonacci numbers
(Message 1475)
Posted 25 Jan 2015 by VictordeHollander Post: Fibonacci(1277)135988771045755502497914458919924958105224158599203245688678833974667972475546566225947586762919210486030227282324391147378584959395133027638085536599001495441035281614074424224968218599641200509100465689124910715736659396557118254538287919595921 (246 digits) Poly SNFS(266.5) Sieving: NFS@home 15e (you!)Post-processing: Victor de Hollander Using: Msieve 1.52 SVN(946) http://sourceforge.net/projects/msieve/ (developed by: Jason Papadopoulos) Filtering 13.8 GB (compressed file) 26.1 GB (uncompressed relations) 222,771,291 (raw) relations 174,628,992 unique relations Target density 120 (too few cycles) and 115 2 hours 27 min (td=120)+ 2 hours 13 min (td=115) on a single core of a 3770k Linear Algebra matrix is 18,994,628 x 18,994,805 (8572.3 MB) linear algebra at 0.0%, ETA 299h29m I'll probably be on skiing holiday when LA will finish, so expect the factors in 2-3 weeks. |