20171020, 14:18  #45 
Jun 2012
3,203 Posts 
RyanP: M2200 c213 is now factored! Quite a nice split too.
Code:
Tue Oct 17 04:15:30 2017 p99 factor: 525077103879105706875225304619849472942239768866741829604368361844184971076751845617813018421428801 Tue Oct 17 04:15:30 2017 p114 factor: 241861516794729837336046087958452873866808443155177447948707938530982316428323386876321611191318103475968017857601 Last fiddled with by swellman on 20171020 at 14:19 
20171023, 22:34  #46 
Jun 2012
3,203 Posts 
Ryan has factored the C213 from M(6300L) using SNFS:
Code:
Mon Oct 23 04:10:48 2017 p78 factor: 602035327079980915091992741119315005265468125193857979582673932560723362010401 Mon Oct 23 04:10:48 2017 p135 factor: 732761907998095169878305228533781088407434310398880446580748389749156333878317234473351618374284022804923754655757930826589873651457001 Last fiddled with by swellman on 20171023 at 22:36 
20171024, 13:27  #47  
Feb 2005
29 Posts 
2^1100+1
Quote:


20171026, 12:49  #48 
Jun 2012
110010000011_{2} Posts 
Factors emailed to Sam Wagstaff by Ryan Propper. Thanks for the heads up!

20171203, 19:54  #49  
Jun 2012
3,203 Posts 
Quote:
Code:
********** Factor found in step 2: 40211073519917713718109832768002378108019468361671184357493283201 Found prime factor of 65 digits: 40211073519917713718109832768002378108019468361671184357493283201 

20180104, 16:49  #50 
Jun 2012
3203_{10} Posts 
M3600 Factored
Ryan Propper and Greg Childers fully factored M3600 back in December via SNFS. See http://factordb.com/index.php?query=M3600. A big job!
The C271 from 2^1232+1 has been fully sieved by Ryan, awaiting LA processing. 
20180105, 04:24  #51 
Romulan Interpreter
"name field"
Jun 2011
Thailand
9,787 Posts 
Nice! Congrats. How the last 3 (4?) "gogol" primes were found? I assume it was a lot of ecm, and/or a lot of luck, because if I add their lengths together, I believe it is too large for nfs, even for Ryan (we have a \(P_{176}\cdot P_{102}\cdot P_{88}\ (\cdot P_{74}\cdot P_{51}\cdot P_{eanuts})\). And in that case, is the P88 some ecm record?
Last fiddled with by LaurV on 20180105 at 04:26 
20180105, 05:30  #52  
Jun 2003
1010000011101_{2} Posts 
Quote:
2^1800+1 (which itself has algebraic factors) 2^900+1 (ditto) 2^450+1 (ditto + aurifeuillian) 2^4501 (ditto) 

20180105, 07:42  #53 
Romulan Interpreter
"name field"
Jun 2011
Thailand
9,787 Posts 
Grrrr... Let me be silly few minutes every day... (whoops, I did it again...) Last fiddled with by LaurV on 20180105 at 07:44 
20180302, 00:35  #54 
Jun 2012
C83_{16} Posts 

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