mersenneforum.org  

Go Back   mersenneforum.org > Factoring Projects > Factoring

Reply
 
Thread Tools
Old 2021-04-25, 05:23   #34
VBCurtis
 
VBCurtis's Avatar
 
"Curtis"
Feb 2005
Riverside, CA

11·461 Posts
Default

I made up some parameters and ran this C103 as a quartic SNFS job on CADO. Took a 2-hyperthreaded instance about 6 minutes to solve on a 12-core machine with 18 other threads busy.
VBCurtis is offline   Reply With Quote
Old 2021-04-25, 06:52   #35
Branger
 
Oct 2018

2·3·5 Posts
Default

And six more base-2 brilliant number, one of which took much longer than expected to find..

Code:
2^353-4203
=
125269909676882800262400105725282077739582106921689791
*
146467647140855997175976549181141923664201888942622379

2^353+20321
=
107212617965684231006696661224016764909923510204087201
*
171136469531909496395965898436670289930931414420683713

2^355-6237
=
201078246063474095502015538594857010445540999246436799
*
364992022501105116452215910637465538969268898994717469

2^355+11609
=
212926542994048279183611705107994489885983607534577991
*
344682042359245646786699688221203535450205665111934047

2^357-84009
=
453147361357734286103874959805167254938456672363539113
*
647841845458687143039115572227866832044273303789018751

2^357+293447
=
470652756196708146570444118328602847134424064755521003
*
623746103643411393320202884671105782953351092003850773
None of these were in the factordb before at least, so they may be new.
Attached Files
File Type: txt 2_353_plus_and_minus_factored.txt (55.6 KB, 69 views)
File Type: txt 2_355_plus_and_minus_factored.txt (39.6 KB, 72 views)
File Type: txt 2_357_minus_factored.txt (190.3 KB, 66 views)
File Type: txt 2_357_plus_factored.txt (690.3 KB, 67 views)
Branger is offline   Reply With Quote
Old 2021-05-05, 18:29   #36
swishzzz
 
Jan 2012
Toronto, Canada

5F16 Posts
Default

Quote:
Originally Posted by swishzzz View Post
Test run of Amazon EC2 free tier. A 103 digit snfs job with factmsieve.py takes around 2.5 hours on a single t2 micro Windows instance running at 10% CPU capacity, perhaps this will be faster on a Linux instance with CADO.

Code:
2^339 + 15885

Sat Apr 24 15:56:40 2021  p51 factor: 887592350957138861091733941658539740396245192826267
Sat Apr 24 15:56:40 2021  p52 factor: 1261696734859514200896533536322632897894845904544119
2^339 ± c completed:

Code:
2^339 - 27235 =
967306904908920452789078319450002924493095732788319 *
1157721882688666313356029082874219101278312435085187
Attached Files
File Type: txt 339b_brilliant.txt (23.0 KB, 66 views)
swishzzz is offline   Reply With Quote
Old 2021-08-24, 12:45   #37
Branger
 
Oct 2018

2×3×5 Posts
Default

Four more base-2 brilliant numbers:

Code:
2^359-123577
=
818923988648227215894707705730371540540812518512510431
*
1433919762596343433061717035212209825301021813200029081

2^359+14621
=
1005099120748900459161798514928920510471822535126047147
*
1168313917648207456964919118126527398761685430631874647

2^361-6273
=
1560537277762292011030721646497096890825992876952316309
*
3009915387784249643267311161037214234010646089476820931

2^361+44571
=
1588267509671791256308972554753220446511580018944216381
*
2957364006343175263301783757664193291901358679995452983
Proof files are attached.
Attached Files
File Type: txt 2_359_minus_factored.txt (285.8 KB, 39 views)
File Type: txt 2_359_plus_factored.txt (33.1 KB, 40 views)
File Type: txt 2_361_minus_factored.txt (14.3 KB, 37 views)
File Type: txt 2_361_plus_factored.txt (101.3 KB, 38 views)
Branger is offline   Reply With Quote
Old 2021-10-21, 17:07   #38
Branger
 
Oct 2018

2×3×5 Posts
Default

And another batch finished:

Code:
2^363-291
=
4094013899900989030912375965276208433376145195035983021
*
4589222489607338458027850363512336418671632190977908977

2^363+163109
=
3594544799178917497808832006387639836453189974351828487
*
5226904020359514021042583817732061323376054356093003891

2^365-21055
=
6610188871706148247866877699982575091248185129696213497
*
11369321528836272916753163939935476417901514113750418441

2^365+25151
=
6975722917193176731536583299621002374191571619112667517
*
10773559033362830224264470417875672248024627915449550699
Proof files are attached.
Branger is offline   Reply With Quote
Old 2021-10-21, 18:55   #39
Branger
 
Oct 2018

2·3·5 Posts
Default

Quote:
Originally Posted by Branger View Post
Proof files are attached.
Well, apparently not. Let's try that again.
Attached Files
File Type: txt 2_363_minus_factored.txt (676 Bytes, 13 views)
File Type: txt 2_363_plus_factored.txt (379.1 KB, 14 views)
File Type: txt 2_365_minus_factored.txt (47.8 KB, 13 views)
File Type: txt 2_365_plus_factored.txt (56.8 KB, 13 views)
Branger is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Smallest 10^179+c Brilliant Number (p90 * p90) 2147483647 Factoring 49 2021-08-18 07:41
Known Largest Harshad Number. spkarra Math 3 2010-06-13 21:02
10^119+x brilliant number Citrix Prime Sierpinski Project 12 2006-05-19 22:21
Number of zero's in largest prime... Heather Math 90 2006-04-01 22:06
New largest prime number??? McBryce Lounge 39 2003-08-12 19:35

All times are UTC. The time now is 14:28.


Sat Dec 4 14:28:44 UTC 2021 up 134 days, 8:57, 0 users, load averages: 1.60, 1.38, 1.29

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.