You could try 3 large primes on the algebraic side.
Are you saying this would normally be 14e but you have tried 15e? If the 0.4 was for 15e I would try 16e.

[QUOTE=henryzz;416701]You could try 3 large primes on the algebraic side.
Are you saying this would normally be 14e but you have tried 15e? If the 0.4 was for 15e I would try 16e.[/QUOTE]

I'm not that familiar with 3LP but can experiment.

It seems this would be a 14e candidate except the yield is poor, i.e., 0.4.
15e gave higher times and lower yields.

[QUOTE=RichD;416703]I'm not that familiar with 3LP but can experiment.

It seems this would be a 14e candidate except the yield is poor, i.e., 0.4.
15e gave higher times and lower yields.[/QUOTE]

Lower yields? Do you mean lower rels/sec or sec/rel? You want lower sec/rel.

What large prime bounds, max factor residue bits and lambda did you use? (Just posting the job files you used for test sieving would tell us this.)

It's algebraic difficulty is a lot bigger than it's rational difficulty, so larger bounds on the algebraic side might work better.

Although 15e may produce fewer relations per second it should have a higher yield per Q so fewer duplicate relations. So it could take less time to produce enough relations to build a matrix.

Chris

17041^53-1 is done: [code]
p94 factor: 3662307602210228535619835779914311370477801234529957729487652126859608483570639687220509696931
p127 factor: 2978616855942897608417116245288905327051816298548174515201094755963010436999669514832836424157718292681957277604324193037052583
[/code]

So I'll reserve another for ECM/SNFS.
1471^67-1

Chris

26849^47-1 is done: [code]
p57 factor: 999660313825904360401355162771337523337586013387325514733
p60 factor: 853149253996464445475030304738838786842326972634088225548103
p87 factor: 630713307565407705793970692222257962738620680662113759812657296084722623319040114863549 [/code]
And reserving:
151068118561^17-1

Chris

26861^47-1 is done: [code]
p77 factor: 70975956485207153809333371066022759565793263009071665197763974875666138697927
p83 factor: 31058908579752037328547553481801909295077667003355286452726560287323742147068742617
[/code]
And reserving:
27337^47-1

Chris

I've nearly finished ECMing 27337^47-1, so I'll reserve another:
5955331^31-1

Chris

5955331^31-1 fell to ECM: [code]
********** Factor found in step 2: 7151913311660233796802038283152839
Found probable prime factor of 34 digits: 7151913311660233796802038283152839
Probable prime cofactor 24703300106771850845980461390116865459438097256674804546778873140660011767895701749003775568249666792510633828101219978996900038522626079821288736554074209946443403757379 has 170 digits
[/code]
So reserving another:
3531757^31-1

Chris

That survived ECM so reserving:
27583^47-1

Chris

Edit. 27583^47-1 didn't take long: [code]
********** Factor found in step 1: 645917520539153211465654299246621
Found prime factor of 33 digits: 645917520539153211465654299246621
Prime cofactor 2879702701861158971380948559265444956925950741230151272761407053708132267001036014910576158157477225003341969456218898949214512249616664827453099414780150133615568499097333 has 172 digits
[/code]
So reserving:
363297061^23-1

363297061^23-1 survived ECM and is queued for SNFS. Reserving another to ECM:
10203065951356683356407^11-1

Chris