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Old 2013-06-18, 23:16   #1090
joral
 
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Quote:
Originally Posted by pinhodecarlos View Post
Still down since 30 May.
Should be back up now. Paul normally does the ecmserver restarts, and I don't have to get involved.
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Old 2013-06-19, 14:31   #1091
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495624278663291943737938064282715305190949183258411 | 9^233 + 2^233
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Old 2013-06-20, 00:42   #1092
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Should be back up now. Paul normally does the ecmserver restarts, and I don't have to get involved.
Speaking of which, has anyone seen Paul about lately?
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Old 2013-06-20, 06:27   #1093
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Quote:
Originally Posted by joral View Post
Speaking of which, has anyone seen Paul about lately?
I'm around but excessively concerned with personal issues ATM.
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Old 2013-06-27, 02:05   #1094
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Need to yank the server for a bit to clear out a lot of deadwood. Will get it back up ASAP, and will let everyone know when done.
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Old 2013-06-28, 19:09   #1095
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Quote:
Originally Posted by joral View Post
Need to yank the server for a bit to clear out a lot of deadwood. Will get it back up ASAP, and will let everyone know when done.
Rebuilt to clear out a lot of stuff.

Paul, when you get a chance past all of your personal stuff, let me know and we'll get passwords set up again. Server is back up and running though.
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Old 2013-06-30, 08:56   #1096
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Here's the latest update for the last few weeks. Eighteen new factors found and there are now 449 composites remaining.
Code:
7-5	265	C136	58533493203446119589396782586974563479438080167874214853541.	P77						Unknown			GNFS	2013-05-09
5+2	307	C214	6407353086277777652399733388270061835863493178699.	C165							R Silverman		ECM	2013-05-13
6-5	281	C148	174411124709711122122052463559928207762546186017037753189339469.	P86					R Smith			SNFS	2013-05-20
11-10	233	C183	24689926211177382882414171151408602529756318572471795598614533.	C122						C de Pinho		SNFS	2013-05-23
11-10	233	C122	88680330182541850480754337763194842503765328802828616713150783780283.	P54					C de Pinho		SNFS	2013-05-23
10+7	229	C216	8222629734581770525577539619884557690421781678677.	P167							R Silverman		ECM	2013-05-24
9+2	227	C216	1175492860741028461783713200517266747839543925298923.	P165							R Silverman		ECM	2013-05-28
5+3	340	C153	98791122680039239831742380955622914672868868727087195646721.	P94						R Smith			SNFS	2013-05-28
7-2	293	C244	10124135188065063620366333093117197358636030962561274957.	C189						R Silverman		ECM	2013-06-01
7-5	299	C217	2018802274855918978636772505695793947719815972980004249705467334064692713.	P144				T Womack		SNFS	2013-06-03
7-2	275	C170	32570669832052827523225787771735931300821223266735367116346751.	P108						R Smith			SNFS	2013-06-05
5-2	335	C162	2397674535615197993731012806027037915152774367831.	P114							S Wellman		SNFS	2013-06-13
5+4	335	C172	917986902601301712136968299212558798807596200550366269970918821.	P109					R Smith			SNFS	2013-06-14
12+5	220	C155	11350784207447115117264924514877204063623568787550746380115549896336064281.	P82				S Wellman		SNFS	2013-06-17
9+2	233	C177	495624278663291943737938064282715305190949183258411.	P126							K SchΓΆnberger		ECM	2013-06-18
5+4	353	C163	6308279969740266545182995420945321876538217498059870874909962787859414241.	P91				T Womack		GNFS	2013-06-24
11+4	233	C223	6363885746056915191747489536789626023295979011459.	P174							R Silverman		ECM	2013-06-25
10-3	235	C161	18462830892737244150429224234661620448176795486860017381725965460981.	P94					R Smith			SNFS	2013-06-25
If anyone can put a name to "Unknown", please inform me and I'll amend the table.

The new tables will be uploaded to the web in the next few minutes.


Paul
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Old 2013-07-02, 22:37   #1097
R.D. Silverman
 
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Originally Posted by xilman View Post
Here's the latest update for the last few weeks.

<snip>
Paul
I just found one more. I finished 9^251 + 5^251.

However, the following is much more important.

There is a conjecture that the Mersenne numbers are squarefree.

This is not true of the Homogenous Cunninghams.

I just found that 269^2 divides 13^134 + 3^134.
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Old 2013-07-03, 00:16   #1098
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Well, but scores of them are divisible by p^2... with large primes, too, e.g.
653^2 | 7^163+10^163
383^2 | 3^191+5^191
4937^2 | 2^617+11^617

Interestingly (and your example fits this), many examples for
(2p+1)^2 | a^p+b^p

Some more:
863^2 | 1+13^431
887^2 | 9^443+10^443

Last fiddled with by Batalov on 2013-07-03 at 00:22
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Old 2013-08-21, 11:20   #1099
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Below are the 18 factors found in the last couple of months. As you see, Bob is the only person to have had success with ECM but several have completed factorizations with NFS. There are now 431 composites left in the tables, which should hit the web later today.

Code:
9+5	251	C236	493949475481744080962535715102489322892817263587.	P188							R Silverman		ECM	2013-07-02
8+3	278	C224	540683700879085344833485581122249484670259752780976593.	P170							R Silverman		ECM	2013-07-03
4-3	395	C163	74631677623817121595305206578925143535274523726396180780610714626410121.	P93				R Smith			SNFS	2013-07-09
7+2	256	C217	304650242992653314452265203352904992005844273333343329385830106948028759018183626185266072912178177.	P118	T Womack		SNFS	2013-07-13
10-3	209	C168	493821714766471403715337972884740820165164156985452281812967.	P108						J Becker		SNFS	2013-07-16
8+5	274	C149	124864238132726331540887489942976465035987629663501.	P99							S Wellman		GNFS	2013-07-22
11+10	230	C184	22361008720555284925462006595715661056900966761251221478291788842840743520507881.	P105			R Smith			SNFS	2013-07-23
11-5	239	C236	337658593869603229027497637326531408884119867263776668063109744457594459924273218212823118715542028843686139.	P128	T Womack	SNFS	2013-08-06
5+4	322	C153	1824373071483990895588872191483812542338539028322315481.	P98						J Becker		SNFS	2013-08-14
7+4	229	C165	2261474276449893273007013116135434285277323020662957309820016737.	P102					J Becker		SNFS	2013-08-15
11-2	217	C151	7033703346342170657616033596547711323343681261485133415131583.	P90						J Becker		SNFS	2013-08-16
11-5	217	C151	27657989559515136499113503781151527469778092536405505173509374506960643.	P81				J Becker		SNFS	2013-08-16
11+4	217	C157	2260596548190313631952714867997379235470097716889892589065541233769801.	P87					J Becker		SNFS	2013-08-17
11-10	217	C164	680114027489223992978046994238644768543707813400101075230843662159476043.	P92				J Becker		SNFS	2013-08-18
9+7	238	C169	257516974359651821895137348302059566325065445333434675913818497129.	P104					J Becker		SNFS	2013-08-18
6-5	269	C210	49217826905573370187001540044915361847133694926923249525947.	P151						J Becker		SNFS	2013-08-19
7+3	232	C180	1437704686614623810577294674128524838465677068781178449781182383201.	P113					J Becker		SNFS	2013-08-20
7+6	232	C187	1591652026369631465139881487806481100871079819371380309751232974347969.	P118					J Becker		SNFS	2013-08-20
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Old 2013-08-22, 05:02   #1100
LaurV
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Did anyone "put a name to unknown"? (no, it is not me, nor anybody I know, I am just curious).
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