mersenneforum.org  

Go Back   mersenneforum.org > Factoring Projects > Lone Mersenne Hunters

Reply
 
Thread Tools
Old 2019-03-31, 21:56   #1376
c10ck3r
 
c10ck3r's Avatar
 
Aug 2010
Kansas

547 Posts
Default

Quote:
Originally Posted by Miszka View Post
Today I found my largest composite factor 19147642464835832222111776488276027610060674573088897824886038321359 (223.5 bits - 68 digits) =82139596673583394582617549419848961 * 233110987151874257840851425095119 for the number of M3146833.
Can someone point me to a link of how to calculate the probability of P-1 finding a factor, as well as the GhZ-Day calculation for P-1? If I could figure out how to make a script to identify exponents < 40M which have similarly high likelihood of factors found/GhZ-Day, I might have to throw my home computers on them...
c10ck3r is offline   Reply With Quote
Old 2019-03-31, 21:57   #1377
James Heinrich
 
James Heinrich's Avatar
 
"James Heinrich"
May 2004
ex-Northern Ontario

3×1,361 Posts
Default

https://www.mersenne.ca/prob.php
https://www.mersenne.ca/p1small.php *

*this is actually pretty out-of-date and needs to be reworked, you may or may not find anything useful there.

Last fiddled with by James Heinrich on 2019-03-31 at 21:57
James Heinrich is offline   Reply With Quote
Old 2019-04-01, 16:41   #1378
petrw1
1976 Toyota Corona years forever!
 
petrw1's Avatar
 
"Wayne"
Nov 2006
Saskatchewan, Canada

10100100110112 Posts
Default 157.7 Bits

2467763 Factored 300535914423293271697652047026544474483005087353

2019-03-15 Sid & Andy F-PM1 Factor: 300535914423293271697652047026544474483005087353 / (P-1, B1=6000000, B2=180000000, E=12)
petrw1 is offline   Reply With Quote
Old 2019-04-02, 02:25   #1379
LaurV
Romulan Interpreter
 
LaurV's Avatar
 
"name field"
Jun 2011
Thailand

2×11×467 Posts
Default

Quote:
Originally Posted by petrw1 View Post
2467763 Factored 300535914423293271697652047026544474483005087353

2019-03-15 Sid & Andy F-PM1 Factor: 300535914423293271697652047026544474483005087353 / (P-1, B1=6000000, B2=180000000, E=12)
Wow, nice one, 158 bits, prime! Congrats!
LaurV is offline   Reply With Quote
Old 2019-04-02, 03:06   #1380
Jwb52z
 
Jwb52z's Avatar
 
Sep 2002

5·132 Posts
Default

P-1 found a factor in stage #1, B1=685000.
UID: Jwb52z/Clay, M91131653 has a factor: 169246433448198777407647199 (P-1, B1=685000)

87.129 bits.
Jwb52z is offline   Reply With Quote
Old 2019-04-04, 05:20   #1381
newalex
 
Feb 2019

24 Posts
Default

320000-360000 range has been completed. 711 exponents were processed and 56 new factors were found. Now i am starting work on 360000-400000 range.


Also I found my first small P-1 factor
P-1 found a factor in stage #2, B1=100000000, B2=2000000000, E=12.
M287939 has a factor: 27265853414344474964957059537 (P-1, B1=100000000, B2=2000000000, E=12)
newalex is offline   Reply With Quote
Old 2019-04-04, 05:24   #1382
petrw1
1976 Toyota Corona years forever!
 
petrw1's Avatar
 
"Wayne"
Nov 2006
Saskatchewan, Canada

52·211 Posts
Default

Quote:
Originally Posted by newalex View Post
320000-360000 range has been completed. 711 exponents were processed and 56 new factors were found. Now i am starting work on 360000-400000 range.


Also I found my first small P-1 factor
P-1 found a factor in stage #2, B1=100000000, B2=2000000000, E=12.
M287939 has a factor: 27265853414344474964957059537 (P-1, B1=100000000, B2=2000000000, E=12)
Impressive
petrw1 is offline   Reply With Quote
Old 2019-04-04, 11:58   #1383
lycorn
 
lycorn's Avatar
 
"GIMFS"
Sep 2002
Oeiras, Portugal

2·5·157 Posts
Default

Quote:
Originally Posted by newalex View Post
(...) with a major goal to complete all unfactored <500000 to 30-digits level.
I´m gonna help you out with the remaining exponents in the 200k range.

Still, I´ll be much slower than you. Your rig is FAST, man!
lycorn is offline   Reply With Quote
Old 2019-04-04, 12:52   #1384
newalex
 
Feb 2019

24 Posts
Default

yes, these two Xeon Scalable processors are awesome. Each core processes about 350 curves per day for B1=250k in this range.
I appreciate your help. Together we will make it done faster. I plan to work up to 500k first so 200k range is all your for 2-3 months.
newalex is offline   Reply With Quote
Old 2019-04-04, 13:06   #1385
lycorn
 
lycorn's Avatar
 
"GIMFS"
Sep 2002
Oeiras, Portugal

2·5·157 Posts
Default

My Kaby Lake @3GHz completes ~285/day per core for the same range.

Will be a bit more as soon as the 200k starts. 2 - 3 months will certainly be enough to complete the range.
lycorn is offline   Reply With Quote
Old 2019-04-06, 07:43   #1386
newalex
 
Feb 2019

24 Posts
Default

The second P-1 factor for small exponents
P-1 found a factor in stage #2, B1=100000000, B2=2000000000, E=12.
M237959 has a factor: 8069793616575708974657372316228989319881 (P-1, B1=100000000, B2=2000000000, E=12)
132.568 bits
newalex is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Glue Factory Andrew Usher Lounge 18 2023-01-05 13:23
Nearby prime to factory 2048 bit stanneraustin Homework Help 0 2022-10-04 15:17
Factorization factory Branger Factoring 15 2019-09-05 15:03
How often do you report ? Axel Fox Lone Mersenne Hunters 19 2003-10-19 07:40
Bug report remaker Software 4 2002-10-17 08:18

All times are UTC. The time now is 21:32.


Mon Jan 30 21:32:59 UTC 2023 up 165 days, 19:01, 0 users, load averages: 1.17, 0.99, 0.94

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2023, 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.

≠ ± ∓ ÷ × · − √ ‰ ⊗ ⊕ ⊖ ⊘ ⊙ ≤ ≥ ≦ ≧ ≨ ≩ ≺ ≻ ≼ ≽ ⊏ ⊐ ⊑ ⊒ ² ³ °
∠ ∟ ° ≅ ~ ‖ ⟂ ⫛
≡ ≜ ≈ ∝ ∞ ≪ ≫ ⌊⌋ ⌈⌉ ∘ ∏ ∐ ∑ ∧ ∨ ∩ ∪ ⨀ ⊕ ⊗ 𝖕 𝖖 𝖗 ⊲ ⊳
∅ ∖ ∁ ↦ ↣ ∩ ∪ ⊆ ⊂ ⊄ ⊊ ⊇ ⊃ ⊅ ⊋ ⊖ ∈ ∉ ∋ ∌ ℕ ℤ ℚ ℝ ℂ ℵ ℶ ℷ ℸ 𝓟
¬ ∨ ∧ ⊕ → ← ⇒ ⇐ ⇔ ∀ ∃ ∄ ∴ ∵ ⊤ ⊥ ⊢ ⊨ ⫤ ⊣ … ⋯ ⋮ ⋰ ⋱
∫ ∬ ∭ ∮ ∯ ∰ ∇ ∆ δ ∂ ℱ ℒ ℓ
𝛢𝛼 𝛣𝛽 𝛤𝛾 𝛥𝛿 𝛦𝜀𝜖 𝛧𝜁 𝛨𝜂 𝛩𝜃𝜗 𝛪𝜄 𝛫𝜅 𝛬𝜆 𝛭𝜇 𝛮𝜈 𝛯𝜉 𝛰𝜊 𝛱𝜋 𝛲𝜌 𝛴𝜎𝜍 𝛵𝜏 𝛶𝜐 𝛷𝜙𝜑 𝛸𝜒 𝛹𝜓 𝛺𝜔