[EMAIL="100@43e6"]100@43e6[/EMAIL] done

+1000 @B1=11e6 from my side
c137 seems ready for gnfs 
+115 @ B1=110e6, B2=776278396540

[QUOTE=unconnected;200113]c137 seems ready for gnfs[/QUOTE]
Hmmmm... on my C2D CPU, poly selection would take ~45 hours, and I have no suitable GPU available. Anyone with a suitable GPU for poly selection? 
[QUOTE=Andi47;200126]Anyone with a suitable GPU for poly selection?[/QUOTE]
I will run it for about a day. 
2000 more curves at B1=11e6 done, no factor.

3e11 is a good score for this number so I am stopping the poly search.
[code]n: 40749881176591001313668881738461183359103092070283580604476483864940722559707999223166066411471564908270442953165453791845420594628304571 # norm 3.030638e13 alpha 7.007098 e 3.019e11 skew: 412205.21 c0: 75928063558542655529864860597168 c1: 9182525920185050132113778204 c2: 16139511119661987272384 c3: 39176187555574241 c4: 418654113212 c5: 182160 Y0: 186181968602879312631151995 Y1: 2753343120517687 rlim: 10000000 alim: 10000000 lpbr: 28 lpba: 28 mfbr: 56 mfba: 56 rlambda: 2.5 alambda: 2.5 [/code] Sieve with 13e from Q=5M to Q=20M. 
[QUOTE=jrk;200161]3e11 is a good score for this number so I am stopping the poly search.
[code]n: 40749881176591001313668881738461183359103092070283580604476483864940722559707999223166066411471564908270442953165453791845420594628304571 # norm 3.030638e13 alpha 7.007098 e 3.019e11 skew: 412205.21 c0: 75928063558542655529864860597168 c1: 9182525920185050132113778204 c2: 16139511119661987272384 c3: 39176187555574241 c4: 418654113212 c5: 182160 Y0: 186181968602879312631151995 Y1: 2753343120517687 rlim: 10000000 alim: 10000000 lpbr: 28 lpba: 28 mfbr: 56 mfba: 56 rlambda: 2.5 alambda: 2.5 [/code] Sieve with 13e from Q=5M to Q=20M.[/QUOTE] I'll take this one. Thanks jrk! Should have factors tomorrow. 
Sieving and the linear algebra took about 8 hours, but I had to sleep on the square root after it [URL="http://www.mersenneforum.org/showthread.php?p=200311#post200311"]crashed [/URL] in msieve version 1.44. An older version of msieve (1.42) completed the factorization.
[CODE]prp60 factor: 345904004092746503021088299379972074287902300978671971758577 prp78 factor: 117806907969948860631659379351218221407555470977030568931916016398691505794923 [/CODE] Not in the DB yet, as it seems to be down. 
we have now:
[CODE] 2503 . 808886594947726621282095520538896991785158434207928622397291049220050736659063085072317728306298140197957084074798571909500231026289846129585304254688751713488420903230048 = 2^5 * 307 * 30851 * 65494328231336658101893937 * 345904004092746503021088299379972074287902300978671971758577 * 117806907969948860631659379351218221407555470977030568931916016398691505794923 [/CODE] next line is 2^5*5*237607*c164 [CODE]c164 = 20749808444920651088836221175319622037091694930266016549531551542740256020430353524980386079961335210514035950464022091006985460208334279424796425621787622208130087 [/CODE] (not yet in the DB as it's still down) 
Will throw some 1e6 curves at the c164.

i am doing p1 to 1e10

[QUOTE=henryzz;200330]i am doing p1 to 1e10[/QUOTE]
Which B2? 
[quote=Andi47;200333]Which B2?[/quote]
dunno havent decided yet at least the standard B2 for a B1 of 1e9 as much as i can fit in memory for first go i expect i might do extend my original run of stage 2 though considering how much ecm we do on the larger candidates i think we dont do enough p1 
Using B1=3000000, B2=5706890290, polynomial Dickson(6), sigma=1530872857
Step 1 took 39279ms Step 2 took 15158ms ********** Factor found in step 2: 91954313213315372804640364402916669 Found probable prime factor of 35 digits: 91954313213315372804640364402916669 Probable prime cofactor 225653454632250912355819749800394215303262812368642804348375684664354501593585125058011274595549690867289505339828574041099734323 has 129 digits Next: c143 = 24974657531872376085838030641699839995405167943859266286028403658435682652095566362402178295861538671288908969271773700577295839144850244114869 
[quote=dekcarki;200335]
. . . ********** Factor found in step 2: 91954313213315372804640364402916669 Found probable prime factor of 35 digits: 91954313213315372804640364402916669 Probable prime cofactor 225653454632250912355819749800394215303262812368642804348375684664354501593585125058011274595549690867289505339828574041099734323 has 129 digits . . . [/quote] Pardon my ignorance (I'm trying to work on that)... If a "probable" prime is found, how do we decide it is indeed prime? Do we submit it to the db and it verifies for us? 
[quote=EdH;200340]Pardon my ignorance (I'm trying to work on that)...
If a "probable" prime is found, how do we decide it is indeed prime? Do we submit it to the db and it verifies for us?[/quote] Yep, that's a good way to do it. If you want to verify it locally, the easiest way is to use PARI/gp's isprime function. [url]http://pari.math.ubordeaux.fr/[/url] 
[QUOTE=EdH;200340]Pardon my ignorance (I'm trying to work on that)...
If a "probable" prime is found, how do we decide it is indeed prime? Do we submit it to the db and it verifies for us?[/QUOTE] Don't shoot the messenger but .... Factoris says Verification of primality Yes, 91954313213315372804640364402916669 passes the rigorous primality test, therefore is really a prime. And Dario Alpern's site says. 225 653454 632250 912355 819749 800394 215303 262812 368642 804348 375684 664354 501593 585125 058011 274595 549690 867289 505339 828574 041099 734323 is prime 
170@1e6 on the c143, no factor.

1400 done @ 3e6, no factor
1000 more in queue 
I've done 650 curves at B1=1e6 (on two cores).

249@3e6, no factor. Switching to 11e6.

[quote=petrw1;200349]Don't shoot the messenger but ....[/quote]
Why would I assault someone bearing good news?:smile: Thank you for the replies. If the db testing is sufficient I would prefer that method to extra work here. If I can get ggnfs fully functioning on my linux machines, I might like to try helping out with this particular subproject. I can use gmpecm on my linux machines. Maybe I should familiarize myself better with that program first... 
BTW i have switched my p1 efforts to the c143
B1 of 1e10 is already done 
ecm@3e6: 1880 + 249 (Andi47) = 2129 curves
will switch to 43e6 
In case the 4788.2506 c143 becomes a GNFS job, here is a suitable poly found with msieve gpu:
[code]n: 24974657531872376085838030641699839995405167943859266286028403658435682652095566362402178295861538671288908969271773700577295839144850244114869 # norm 7.961807e14 alpha 8.145651 e 1.414e11 skew: 1613652.80 c0: 340516645262140382561175929181715365 c1: 1763115921633023433555838517679 c2: 2118523674580323342514219 c3: 1313252203163147779 c4: 212609990864 c5: 125580 Y0: 2882149484802647693732699854 Y1: 13513713595733423 rlim: 12500000 alim: 12500000 lpbr: 28 lpba: 28 mfbr: 56 mfba: 56 rlambda: 2.6 alambda: 2.6[/code] Sieve with 14e from Q=5M to about Q=17M. 
280 @ 43e6 no factor

I guess we'll need a bit more than t45. t45 is 4480 curves at 11e6 or 1277 at 43e6. So I suggest maybe 15002000 curves at 43e6.

P1 run to 1e10 with B2 of 1e15
i can run further B2 if anyone thinks it worthwhile each further 1e15 will take about 50 minutes but increasing B2 only really increases the chance of finding small factors that would already have been removed by ecm 
617@11e6, no factor.

[QUOTE=jrk;200371]In case the 4788.2506 c143 becomes a GNFS job, here is a suitable poly found with msieve gpu:[/QUOTE]
I am going to do a little more poly searching. 
1000@11e6 will be done in 6 hours.

[QUOTE=jrk;200477]I am going to do a little more poly searching.[/QUOTE]
Didn't find any improvement. I think the one above is still good enough. 
[quote=unconnected;200482]1000@11e6 will be done in 6 hours.[/quote]
Done. No factors found. 
Happy New Year and thanks!
I just want to wish everyone a Happy New Year and offer my thanks for all the cycles that everyone has contributed over the last nine months to this particular project.
I certainly never imagined that there would be enough interest (and horsepower) to push this sequence up to 170+ digits. Here's hoping that we can keep this going for at least a couple more digits! PS. Countdown to 9000 lines for 314718: [B]34 lines[/B]! [size="1"]That means only 1034 lines to 10000, 10metreh![/size] 
232@43e6, no factor.

Total ECM done so far (dekcarki + unconnected + Andi47 + others at B1<11e6):
~1600@1e6 2129@3e6 1617@11e6 512@43e6 This sums up to @88.8% of t45 or 12.9% of t50 
[QUOTE=schickel;200508]I just want to wish everyone a Happy New Year and offer my thanks for all the cycles that everyone has contributed over the last nine months to this particular project.
I certainly never imagined that there would be enough interest (and horsepower) to push this sequence up to 170+ digits. Here's hoping that we can keep this going for at least a couple more digits! PS. Countdown to 9000 lines for 314718: [B]34 lines[/B]! [size="1"]That means only 1034 lines to 10000, 10metreh![/size][/QUOTE] Well we could reach 10000 lines if we get the downdriver :smile: I also thank everyone for all the CPU cycles you have contributed to a project whose aim is just to have fun. :razz: I hope that within the next nine months, among other things, we will find a sequence that merges with itself and forms a really long cycle. That would break a record that is over 90 years old! 
I'll launch another 1000 curves @B1=11e6.

After ~300 curves I got p45 factor.
[CODE]Factor=515906718700780232747489355180421058695246643 Method=ECM B1=11000000 Sigma=3903608469 [/CODE] 
Cool! I had 280 or so of 1200 curves at 43e6 completed which I'm now killing.

Factored the next step:
[code] Using B1=1000000, B2=1045563762, polynomial Dickson(6), sigma=3593314410 Step 1 took 12230ms ********** Factor found in step 1: 2927046619584909196431045775337 Found probable prime factor of 31 digits: 2927046619584909196431045775337 Probable prime cofactor 695023374436107435026730230414112101733446311062234205743953678517548724659706913561650067888649 h as 96 digits [/code] 
[QUOTE=unconnected;200835]After ~300 curves I got p45 factor.
[CODE]Factor=515906718700780232747489355180421058695246643 Method=ECM B1=11000000 Sigma=3903608469 [/CODE][/QUOTE] Have you sent that to Paul Zimmermann? 
No, it is too small for me. Last year I have had two p57 and several p50+ factors.
 Now c163 on line 2509 :w00t: 
[QUOTE=unconnected;200854]No, it is too small for me. Last year I have had two p57 and several p50+ factors.[/QUOTE]
Why not get on the top 10 for a few days? We now have 2^6, and we can't lose it this line. 
Completed 900 curves (on three cores) on c163 at B1=1e6 so t35 level. Doing no more work.

With my normal 'overkill is barely adequate' policy, I have started 2000@4e7 on the c163. This will take about 24 hours.

I have started 1000 curves at 11e6. (44 done so far, no factor)

2300@11e6 are done with no result. This is about 0.5*t45, how much ECM'ing we need?

[QUOTE=unconnected;200932]2300@11e6 are done with no result. This is about 0.5*t45, how much ECM'ing we need?[/QUOTE]
My rough guess is somewhere between 0.5*t55 = 9k @ 11e7 and 1*t55 ~ 17.5k @ 11e7 Please correct me if I'm wrong. 
I've found this from earlier in our work on 4788:
[code]2333. 267978784508632868343114847060812948279629292222915880423759712858412228867957672971392000334670854838983335804438635643938788616600711408 = 2^4 * 3^2 * 92989028981 * 20012724099852599089965372134485155116134772186454249553781779673226527290856944625213723452411520667787389702557824640299547 2334. 481989619367342300734926329299579333889808536162741292564431101669679385519428605078705127063681626407548814866268364104159634219199843400 = 2^3 * 3^2 * 5^2 * 113 * 1613 * 1469103417254906821891838525901519591281166652227511390565077811335259014361034774239982074917602330156553759267494027765310350877 2335. 1152029206656316235471974481634606578356690329167224215707869782740824424411095903792101012459097585754639615021880805093048397651097766560 = 2^5 * 3^2 * 5 * 32003 * 1699413013515872926645731409301488559658444959 * 14709955753239154289970165983314290789323403834840450008018750264105583016407344451037[/code] This escape from 2^3 * 3 * 5 is the highest ever, at 138 digits. 
I feel escape form 2^3*3*5 is different from escape from 2^3*3^2*5 because 2^3*3^2*5 can never become a driver without changing the power of 2. This is because there are 2 factors of 3  one from 2^3 and one from 5. 2^5*3^2*7 is also this way with sigma(2^5)=63  which is 2 factors of 3 as well.
So if you have a square term on the 3 it shouldn't count as the 2^3*3*5 driver. 
[QUOTE=Greebley;200985]I feel escape form 2^3*3*5 is different from escape from 2^3*3^2*5 because 2^3*3^2*5 can never become a driver without changing the power of 2. This is because there are 2 factors of 3  one from 2^3 and one from 5. 2^5*3^2*7 is also this way with sigma(2^5)=63  which is 2 factors of 3 as well.
So if you have a square term on the 3 it shouldn't count as the 2^3*3*5 driver.[/QUOTE] I thought that if the 5 is squared, the 3^2 could drop back to 3^1. 
Actually that is true, but rare enough that I still don't consider them the same.
The driver concept doesn't really fully cover higher powers adequately to really say. 
p1: B1=2e9, B2=1e15, no factor

2000@4e7 complete, no factor.
Will run 2000@1e8 over the weekend (I have realwork to do on the dualE5520 machine until then); I think it might now be sensible for jrk to start a polynomial search. 
1600 @ 43e6 completed. 800 @ 11e7 scheduled for tonight

[QUOTE=bsquared;201046]1600 @ 43e6 completed. 800 @ 11e7 scheduled for tonight[/QUOTE]
I have done 1 curve each at 4e7 and 1e8 to read the number of required curves for each digit level (used for the calculation below) So we currently have a total of: [CODE] 900 @ 1e6 2300 @ 11e6 2001 @ 40e6 1600 @ 43e6 1 @ 1e8[/CODE] this sums up to ~322.8% of t45 = 52.3% of t50 = 7.65% of t55 
[QUOTE=fivemack;201041]I think it might now be sensible for jrk to start a polynomial search.[/QUOTE]
Ok. 
1000@11e6
+ 1@43e6 (benchmarking) summing up to: [CODE] 900 @ 1e6 3300 @ 11e6 2001 @ 40e6 1601 @ 43e6 1 @ 1e8[/CODE] Edit: This is equal to ~344.5% of t45 = 55.3% of t50 = 8.01% of t55 
p+1: 3* B1=3e9, B2=1e15, no factor.

[quote=unconnected;200835]After ~300 curves I got p45 factor.
[code]Factor=515906718700780232747489355180421058695246643 Method=ECM B1=11000000 Sigma=3903608469 [/code][/quote] I have sent up that factor to Mr. Paul Zimmermann. He asks you to give your real name in order to give the top 10 place for GMPECM factors within the year 2010 only. [color=blue][b]10metreh:[/b] unconnected is Dmitry Domanov.[/color] 
[QUOTE=bsquared;201046] 800 @ 11e7 scheduled for tonight[/QUOTE]
800 @ 11e7 done. 
45@11e7 done.
Total curves done: [code] 900 @ 1e6 3300 @ 11e6 2001 @ 40e6 1601 @ 43e6 1 @ 1e8 845 @ 11e7[/code] this is equal to ~482.3% of t45 = 82.3% of t50 = 12.76% of t55 = 1.83% of t60 
Arrgh, if I'd have posted a few minutes earlier you wouldn't have to redo this... sorry :)
1000 more at 11e7 done. 
[QUOTE=bsquared;201270]Arrgh, if I'd have posted a few minutes earlier you wouldn't have to redo this... sorry :)
1000 more at 11e7 done.[/QUOTE] No problem  it's just typing the figures into an excelfile. New total: [CODE] 900 @ 1e6 3300 @ 11e6 2001 @ 40e6 1601 @ 43e6 1 @ 1e8 1845 @ 11e7[/CODE] This equals to 645.5% of t45 = 114.2% of t50 = 18.4% of t55 = 2.73% of t60 (= 0.314% of t65 :wink: ) 
93 more curves at 11e7 done.

I have sent the current file for 4788 to Christophe Clavier. He says that it will not appear on his site until he next does an update.

[QUOTE=10metreh;201279]I have sent the current file for 4788 to Christophe Clavier. He says that it will not appear on his site until he next does an update.[/QUOTE]Thanks for that. I had been meaning to do that but kept forgetting....
[size="1"]I kept hoping we would hit the downdriver....[/size] 
2500 more curves at 11e7 done.

[QUOTE=bsquared;201391]2500 more curves at 11e7 done.[/QUOTE]
105 more @ 11e7 done on my side. (bsquared, you undoubtedly have got the bigger iron.) New total: [CODE] 900 @ 1e6 3300 @ 11e6 2001 @ 40e6 1601 @ 43e6 1 @ 1e8 4543 @ 11e7[/CODE] This equals to ~1086% of t45 = 200.3% of t50 = 33.6% of t55 = 5.15% of t60 
One of the side benefits of my day job, I guess; many fast workstations often left idle on nights and weekends.
1750 more will be done by tomorrow :) 
1750 more done @ 11e7. We now have:
[CODE]900 @ 1e6 3300 @ 11e6 2001 @ 40e6 1601 @ 43e6 1 @ 1e8 6295 @ 11e7[/CODE] which is ~ 2.5 * t50 or 0.43 * t55 
I think this is nearly enough ECM. jrk, how is the poly search going?

[QUOTE=10metreh;201521]I think this is nearly enough ECM. jrk, how is the poly search going?[/QUOTE]
It's done. Use this one: [code]n: 8519618226197093878278613851429334276607578086560582046132272468491047228903383713809367142607155237315475444625223025926760239272565192820910356755196796601078683 # norm 4.832139e16 alpha 8.365564 e 6.936e13 skew: 82092126.77 c0: 4506332652721281857439312883465578850580235 c1: 1546557538158535979212952557252545273 c2: 493361789599381258970904335 c3: 1674326900805118095209 c4: 406958861894 c5: 22800 Y0: 51819960992313118269272571928496 Y1: 813459549425076319 rlim: 50000000 alim: 50000000 lpbr: 30 lpba: 30 mfbr: 60 mfba: 60 rlambda: 2.6 alambda: 2.6 [/code] Sieve with 14e from Q=20M to about Q=120M. 
[QUOTE=fivemack;201041]Will run 2000@1e8 over the weekend (I have realwork to do on the dualE5520 machine until then); I think it might now be sensible for jrk to start a polynomial search.[/QUOTE]
Have you done / completed this curves? 
No; I was ill on Friday and didn't get to go into work and start them.
Nonetheless, sieving time now. 
Appears that the 4788.2509 c163 has been "set prime'd" in Syd's database.

You may want to ask Syd to check who did [URL="http://factordb.com/search.php?id=88464188"]that[/URL] and ban the bastard.
This is not the first instance; it had happened to other seqs as well. (According to Syd's early description, that person must have the "extra permissions".) 
Time to gnfs the c125. (1e6 and 3e6 are done.)

did p1 1e10 and p+1 e9 and am at
c125: running 1774 ecm curves at B1=3e6... 
im trying gpu poly selec with default np settings, those are the best? theres an option to choose coefficients but i have no clue what to enter

[QUOTE=Joshua2;204856]im trying gpu poly selec with default np settings, those are the best? theres an option to choose coefficients but i have no clue what to enter[/QUOTE]
That is fine. If you have to restart the poly selection, though, you'll need to specify those bounds to something which was not already touched. Otherwise, you don't need to set them. 
did only 296 ecm @ 3e6 since batalov finished i guess i'll post poly in the morn and we start? with the lack of response and sudden interest in aliquot over einstein@home, im running 2000 11e6 curves :) hopefully they will be done in the morn.

[QUOTE=Joshua2;204864]did only 296 ecm @ 3e6 since batalov finished i guess i'll post poly in the morn and we start? with the lack of response and sudden interest in aliquot over einstein@home, im running 2000 11e6 curves :) hopefully they will be done in the morn.[/QUOTE]
c125 is a bit small for a team job I think. 
Indeed, that's 4 days or less of work for a dualcore computer.
Nowadays, GNFS 154155 (512bit integers) are doable by a single dualcore desktop computer in a couple months of calendar time. 
right, who is going to do it? not me, im doing postproc for something else sounds like. I'll post my poly's when I get back.

Sun Feb 07 23:41:21 2010 time limit set to 7.76 hours
Sun Feb 07 23:41:21 2010 searching leading coefficients from 1 to 57313 Sun Feb 07 23:41:21 2010 using GPU 0 (GeForce GTX 275) Mon Feb 08 09:45:23 2010 polynomial selection complete Mon Feb 08 09:45:23 2010 R0: 1261560419516801344975723 Mon Feb 08 09:45:23 2010 R1: 39194833069981 Mon Feb 08 09:45:23 2010 A0: 371433747176873417300664390980 Mon Feb 08 09:45:23 2010 A1: 394104418937349332267478 Mon Feb 08 09:45:23 2010 A2: 133971469295650659981 Mon Feb 08 09:45:23 2010 A3: 242063660660552 Mon Feb 08 09:45:23 2010 A4: 20926729736 Mon Feb 08 09:45:23 2010 A5: 15960 Mon Feb 08 09:45:23 2010 skew 131290.71, size 5.941621e012, alpha 6.553466, combined = 1.648996e010 Mon Feb 08 09:45:23 2010 elapsed time 10:04:04 
[quote=Joshua2;204987]Sun Feb 07 23:41:21 2010 time limit set to 7.76 hours
Sun Feb 07 23:41:21 2010 searching leading coefficients from 1 to 57313 Sun Feb 07 23:41:21 2010 using GPU 0 (GeForce GTX 275) Mon Feb 08 09:45:23 2010 polynomial selection complete Mon Feb 08 09:45:23 2010 R0: 1261560419516801344975723 Mon Feb 08 09:45:23 2010 R1: 39194833069981 Mon Feb 08 09:45:23 2010 A0: 371433747176873417300664390980 Mon Feb 08 09:45:23 2010 A1: 394104418937349332267478 Mon Feb 08 09:45:23 2010 A2: 133971469295650659981 Mon Feb 08 09:45:23 2010 A3: 242063660660552 Mon Feb 08 09:45:23 2010 A4: 20926729736 Mon Feb 08 09:45:23 2010 A5: 15960 Mon Feb 08 09:45:23 2010 skew 131290.71, size 5.941621e012, alpha 6.553466, combined = 1.648996e010 Mon Feb 08 09:45:23 2010 elapsed time 10:04:04[/quote] thanks, I'll take it. 
1 Attachment(s)
[QUOTE=bsquared;204988]thanks, I'll take it.[/QUOTE]
done: [CODE]Mon Feb 8 23:19:47 2010 prp55 factor: 2639365095828977842437628607597655323897574150129623567 Mon Feb 8 23:19:47 2010 prp71 factor: 19323748826957048125681168699591757063121487904733857412142128226705327[/CODE] details attached. Currently on a C162. 
cracked. move on
...a c146 in i2515? 
I'll do the c112.

[quote=Batalov;205013]I'll do the c112.[/quote]
Done. P.S. i2518: c128 is ECMed enough. Time to gnfs. 
I'll start a poly selection on the c128.

[QUOTE=jrk;205108]I'll start a poly selection on the c128.[/QUOTE]
Use this one: [code]n: 12413146892411335212475324738611103299821881025295924598543239901364996511237911261347337655057269845534039368928550681048097703 # norm 3.269894e12 alpha 8.004251 e 1.168e10 skew: 1072068.48 c0: 1730676659846478611597742312805725 c1: 1810479060829332238437319809 c2: 863955747933414064265 c3: 4527605540759177 c4: 3009875302 c5: 4680 Y0: 4838689711426194559472012 Y1: 48926616529223 rlim: 5000000 alim: 5000000 lpbr: 26 lpba: 26 mfbr: 52 mfba: 52 rlambda: 2.5 alambda: 2.5 [/code] Sieve with 13e from Q=2M to 7M 
lpb26??
[QUOTE=jrk;205215]Use this one:
[code]n: 12413146892411335212475324738611103299821881025295924598543239901364996511237911261347337655057269845534039368928550681048097703 # norm 3.269894e12 alpha 8.004251 e 1.168e10 skew: 1072068.48 c0: 1730676659846478611597742312805725 c1: 1810479060829332238437319809 c2: 863955747933414064265 c3: 4527605540759177 c4: 3009875302 c5: 4680 Y0: 4838689711426194559472012 Y1: 48926616529223 rlim: 5000000 alim: 5000000 lpbr: 26 lpba: 26 mfbr: 52 mfba: 52 rlambda: 2.5 alambda: 2.5 [/code] Sieve with 13e from Q=2M to 7M[/QUOTE] Are you sure about lpbr/a 26? afik the crossover (26/27) is around c110? 
[QUOTE=Andi47;205219]Are you sure about lpbr/a 26? afik the crossover (26/27) is around c110?[/QUOTE]
I checked. 26 appeared to have a slight edge. 27bit: [code]Warning: lowering FB_bound to 1999999. total yield: 2674, q=2001037 (0.01092 sec/rel) Warning: lowering FB_bound to 2499999. total yield: 2654, q=2501003 (0.01143 sec/rel) Warning: lowering FB_bound to 2999999. total yield: 2979, q=3001001 (0.01096 sec/rel) Warning: lowering FB_bound to 3499999. total yield: 2647, q=3501041 (0.01130 sec/rel) Warning: lowering FB_bound to 3999999. total yield: 3083, q=4001003 (0.01163 sec/rel) Warning: lowering FB_bound to 4499999. total yield: 3528, q=4501001 (0.01186 sec/rel) total yield: 2687, q=5001001 (0.01180 sec/rel) total yield: 2570, q=5501003 (0.01231 sec/rel) total yield: 2608, q=6001013 (0.01274 sec/rel) total yield: 2772, q=6501007 (0.01297 sec/rel) [/code] 26bit: [code]Warning: lowering FB_bound to 1999999. total yield: 1458, q=2001037 (0.01964 sec/rel) Warning: lowering FB_bound to 2499999. total yield: 1385, q=2501003 (0.02134 sec/rel) Warning: lowering FB_bound to 2999999. total yield: 1511, q=3001001 (0.02105 sec/rel) Warning: lowering FB_bound to 3499999. total yield: 1361, q=3501041 (0.02142 sec/rel) Warning: lowering FB_bound to 3999999. total yield: 1554, q=4001003 (0.02247 sec/rel) Warning: lowering FB_bound to 4499999. total yield: 1767, q=4501001 (0.02313 sec/rel) total yield: 1326, q=5001001 (0.02333 sec/rel) total yield: 1297, q=5501003 (0.02375 sec/rel) total yield: 1297, q=6001013 (0.02500 sec/rel) total yield: 1412, q=6501007 (0.02487 sec/rel) [/code] 
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