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 Showing results 1 to 25 of 1000 Search took 0.27 seconds. Search: Posts Made By: chris2be8
 Forum: NFS@Home 2020-11-26, 16:44 Replies: 51 Views: 2,902 Posted By chris2be8 QUEUED AS f67_137m1 ... QUEUED AS f67_137m1 (67^137-1)/21407500575240997528059313818 from the Brent tables. # Built Wed Nov 25 17:26:20 2020 # Estimated SNFS difficulty 252, GNFS equivalent 182, GNFS difficulty 222,...
 Forum: NFS@Home 2020-11-25, 20:54 Replies: 89 Views: 4,050 Posted By chris2be8 f20_193p1 is done: p123 factor:... f20_193p1 is done: p123 factor: 743395129164316869525665577319693817035097284345238034426961878946172470558944727352947390616022972186685505892718904201101 p127 factor:...
 Forum: FactorDB 2020-11-25, 16:49 Replies: 426 Views: 41,580 Posted By chris2be8 Second run finished: Stopping at 3011 digits... Second run finished: Stopping at 3011 digits number 3 (2874 proved prime (tried to factor 11564 N-1's, 0 new factors added, 187 fully factored)) Most of the successes were of the form...
 Forum: NFS@Home 2020-11-23, 16:55 Replies: 89 Views: 4,050 Posted By chris2be8 f20_193p1 has built a matrix. About 49 hours... f20_193p1 has built a matrix. About 49 hours remain so I should have a result on Wednesday or Thursday depending on how many square root steps it takes. Chris
 Forum: Factoring 2020-11-23, 16:44 Replies: 9 Views: 387 Posted By chris2be8 I think it might mean that if a number has... I think it might mean that if a number has several prime factors stage 1 might find a composite factor, the product of more that 1 prime factor. But stage 2 would not find a composte factor. But...
 Forum: FactorDB 2020-11-22, 16:43 Replies: 426 Views: 41,580 Posted By chris2be8 And the script has finished: Stopping at... And the script has finished: Stopping at 3010 digits number 4 (5347 proved prime (tried to factor 12735 N-1's, 1 new factor added, 427 fully factored)) Although there were very few matching...
 Forum: NFS@Home 2020-11-21, 18:19 Replies: 89 Views: 4,050 Posted By chris2be8 f91_127m1 is done: p54 factor:... f91_127m1 is done: p54 factor: 630945082975691656959512602591389470959316859699955789 p147 factor:...
 Forum: FactorDB 2020-11-21, 16:56 Replies: 54 Views: 3,573 Posted By chris2be8 That would reduce the number of page requests per... That would reduce the number of page requests per hour, but increase the risk of a collision. I'd only recommend it working well below 70 digits, in a range no one else is working on. And keep the...
 Forum: NFS@Home 2020-11-21, 16:44 Replies: 51 Views: 2,902 Posted By chris2be8 QUEUED AS f48_149p1 ... QUEUED AS f48_149p1 (48^149+1)/79982198475611344580308711 from the Brent tables. # Built Fri Nov 20 17:23:16 2020 # Estimated SNFS difficulty 251, GNFS equivalent 180, GNFS difficulty 225,...
 Forum: FactorDB 2020-11-20, 17:04 Replies: 54 Views: 3,573 Posted By chris2be8 There have been a load of a few thousand digit... There have been a load of a few thousand digit numbers added to factordb recently. When factordb tries to factor them it runs ECM, which often finds a composite factor which is the product of most of...
 Forum: FactorDB 2020-11-20, 16:56 Replies: 426 Views: 41,580 Posted By chris2be8 Hello, There are now over 121000 PRPs under... Hello, There are now over 121000 PRPs under 3000 digits in factordb. I'm running a script to prove simple cases prime by N-1 if N-1 has algebraic factors (it handles (b^p-1)/(b-1) and...
 Forum: NFS@Home 2020-11-19, 16:54 Replies: 89 Views: 4,050 Posted By chris2be8 f91_127m1 has built a matrix. About 47 hours... f91_127m1 has built a matrix. About 47 hours remain so I should have a result on Saturday. Chris
 Forum: FactorDB 2020-11-18, 17:17 Replies: 54 Views: 3,573 Posted By chris2be8 To judge by the bits of html factordb is sending... To judge by the bits of html factordb is sending a web page instead of a number to factor. Which might well be saying you have reached a limit on how much you can do in an hour. The limits are by IP...
 Forum: FactorDB 2020-11-17, 17:22 Replies: 54 Views: 3,573 Posted By chris2be8 If you have GP installed try something like: ... If you have GP installed try something like: echo 'factor(\$n,10^5)' | gp -f -q That TFs a number up to 10^5 which is a much better way to split off small factors than running ECM. Chris
 Forum: FactorDB 2020-11-17, 17:18 Replies: 54 Views: 3,573 Posted By chris2be8 No, I've stopped that (there don't seem to be any... No, I've stopped that (there don't seem to be any left in this range). Looking at a few in the 70+ digit range most of them seem to be from factordb running ECM against a large number and finding...
 Forum: NFS@Home 2020-11-17, 16:54 Replies: 51 Views: 2,902 Posted By chris2be8 QUEUED AS f28_173p1 ... QUEUED AS f28_173p1 (28^173+1)/302830318008957566210407099069397706796228194779381147147934606233178157091 from the Brent tables. # Built Mon Nov 16 17:44:22 2020 # Estimated SNFS difficulty...
 Forum: FactorDB 2020-11-16, 17:03 Replies: 54 Views: 3,573 Posted By chris2be8 I've started running a script to add algebraic... I've started running a script to add algebraic factors where they exist to factordb. I'm currently working from 88 to 90 digits. Which should thin down the junk a bit. But this is getting rather...
 Forum: FermatSearch 2020-11-12, 17:27 Replies: 57 Views: 2,610 Posted By chris2be8 Just use whatever search engine is available in... Just use whatever search engine is available in China. Or move to a civilised country. Chris
 Forum: Math 2020-11-10, 16:46 Replies: 6 Views: 161 Posted By chris2be8 A better way to do it is to generate several... A better way to do it is to generate several public/private key pairs, each independently generated from random noise. Then encrypt the private keys with a symmetric key generated from a secure...
 Forum: NFS@Home 2020-11-08, 16:43 Replies: 51 Views: 2,902 Posted By chris2be8 QUEUED AS f20_193p1 (20^193+1)/21 from the... QUEUED AS f20_193p1 (20^193+1)/21 from the Brent tables: # Built Sat Nov 7 16:58:32 2020 # Estimated SNFS difficulty 252, GNFS equivalent 181, GNFS difficulty 250, degree 6 n:...
 Forum: NFS@Home 2020-11-07, 16:40 Replies: 89 Views: 4,050 Posted By chris2be8 f62_139m1 is done: p79 factor:... f62_139m1 is done: p79 factor: 1794002212391093481109942470193527269059906327620839422549145847924328278841621 p157 factor:...
 Forum: FactorDB 2020-11-04, 16:56 Replies: 54 Views: 3,573 Posted By chris2be8 @EdH, you are welcome to move my last 2 posts... @EdH, you are welcome to move my last 2 posts from the aliquot thread here, I was only using it as a place to let off steam about the amount of junk being added to factordb. I've got one system...
 Forum: NFS@Home 2020-11-04, 16:41 Replies: 89 Views: 4,050 Posted By chris2be8 f57_142p1_2nd_try is done: p63 factor:... f57_142p1_2nd_try is done: p63 factor: 167552745124874086437111677817378592021218235263605211795460501 p127 factor:...
 Forum: FactorDB 2020-11-02, 17:13 Replies: 54 Views: 3,573 Posted By chris2be8 I don't think the small composites are from the... I don't think the small composites are from the rebuild. I've seen quite a few numbers like: (738468*49##+557)/35840141013305049257323 (2^295+94923)/13352559799576307 So it's general junk,...
 Forum: FactorDB 2020-11-01, 17:31 Replies: 54 Views: 3,573 Posted By chris2be8 I'm working on them. But it's like painting the... I'm working on them. But it's like painting the Forth Bridge. And starting to get annoying. Though I don't think that alone would slow down sequence processing. Chris
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