20131027, 18:06  #1 
May 2013
East. Always East.
11·157 Posts 
Biggest factors found by P1
I was going through some of my P1 results and had to :facepalm: when I saw that the latest two were 2^{74.09} and 2^{74.18}.
Anyway, I found this one too. M63267157 has a factor: 91234295579487063953720150647 = 2^{96.204} Trial factoring to 97 in order to find that one would take 251658240 GHzDays which is over a hundred times the yearly output of GPU72 in TF. Woohoo P1 factoring. I'm sure 2^{96.204} isn't actually such a big deal, so I was wondering if everyone could dig through their results for the biggest factor they've found by P1. (in your personal results page, just look for the result that just fits in the column: that one is the biggest and determines the size of the column) Let's see who takes home the prize. Last fiddled with by TheMawn on 20131027 at 18:07 
20131027, 18:14  #2  
If I May
"Chris Halsall"
Sep 2002
Barbados
2·3^{4}·67 Posts 
Quote:


20131027, 19:51  #3 
"Mr. Meeseeks"
Jan 2012
California, USA
879_{16} Posts 
Mine is 123.77 bits, at pos. 13.

20131027, 20:11  #4 
May 2013
East. Always East.
11·157 Posts 
How many people do P1 through GPU72 versus primenet? Is there any strong reason to pick one over the other?

20131027, 20:18  #5 
If I May
"Chris Halsall"
Sep 2002
Barbados
2×3^{4}×67 Posts 

20131027, 20:23  #6 
"Mr. Meeseeks"
Jan 2012
California, USA
3^{2}×241 Posts 
Almost everyone who uses gpu72 for their gpu uses it for their "other" stuff as well.

20131027, 21:26  #7  
P90 years forever!
Aug 2002
Yeehaw, FL
2^{2}×43×47 Posts 
Quote:
17504141 426315489966437174530195419710289226952407399 

20131028, 00:00  #8 
May 2011
Orange Park, FL
2·3·151 Posts 

20131028, 00:18  #9 
May 2013
East. Always East.
1727_{10} Posts 
Are the big ones from setting bounds to freakishly high numbers or just random luck?

20131028, 00:28  #10 
May 2011
Orange Park, FL
2·3·151 Posts 
All of mine are random luck, and I have four on the GPU72 top 100 list (I do give P1 8000 Mb memory).
Last fiddled with by Chuck on 20131028 at 00:29 Reason: memory 
20131028, 03:32  #11 
May 2013
East. Always East.
11·157 Posts 
Is P1 guaranteed to give a prime factor? Could some of those massive ones be products of two smaller numbers around 2^{74} to 2^{76} or whatever to give 2^{150}? Just thought of that now.

Thread Tools  
Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
How are such big factors found? (M1193)  heliosh  PrimeNet  7  20180124 16:54 
No factors found  aketilander  PrimeNet  9  20110517 11:32 
How to find factors I found with TF?  edorajh  PrimeNet  3  20041001 19:16 
More factors found with a new program  alpertron  ElevenSmooth  8  20031015 10:29 
Biggest factors  GP2  Data  6  20030916 01:15 