[QUOTE=wblipp;414165]Also the C155 from [URL="http://factordb.com/index.php?query=%28836561914831^19-1%29%2F671074073400244230%2B1"]P209+1[/URL] needs a polynomial.
Yoyo@home has completed ECM to 1/3 of the composite's size.[/QUOTE]

I ran A5 to 5M and the best is:
[CODE]N: 42478329143717697068128275317622690283606530515323195978137193899804730837622010436007657787735375096314828151273323099804010105711271407130292831265232823
# expecting poly E from 2.66e-12 to > 3.06e-12
R0: -391040184714413273445822416032
R1: 8402897566249859
A0: 1154108967858006007428922595827725
A1: 107234251268135851979405294595
A2: 487532976357629331085981
A3: -1821532875693767267
A4: -15323186486498
A5: 4645800
# skew 288726.32, size 5.559e-15, alpha -6.174, combined = 3.167e-12 rroots = 3[/CODE]

[QUOTE=wblipp;414165]Also the C153 from [URL="http://factordb.com/index.php?id=1100000000504419142"]P233+1[/URL] needs a polynomial.
Yoyo@home has completed ECM to 1/3 of the composite's size.[/QUOTE]

Two to choose from.
[CODE]N: 420047288333340242583405093510174122639560988571844667835610666758007919733787088168448793852052076334346472260991013532063084902271124691404891759561421
# expecting poly E from 3.52e-12 to > 4.05e-12
R0: -125823658880406857837003597669
R1: 1277362146802649
A0: -195556934368855805239897078328357760
A1: 654561037250742815895346300632
A2: 113714338439865311631334
A3: -7218878657005993865
A4: 51728803902768
A5: 13319460
# skew 496556.16, size 7.020e-15, alpha -7.617, combined = 3.522e-12 rroots = 3[/CODE]

[CODE]N: 420047288333340242583405093510174122639560988571844667835610666758007919733787088168448793852052076334346472260991013532063084902271124691404891759561421
# expecting poly E from 3.52e-12 to > 4.05e-12
R0: -153029200233025889778322393704
R1: 166065831999053
A0: 4354953257047716387791391562522440305
A1: -19841176462793732199873523379840
A2: -14520616380721840048814414
A3: -26199357297068272492
A4: 8262214491837
A5: 5005260
# skew 1632230.67, size 6.724e-15, alpha -8.176, combined = 3.436e-12 rroots = 3[/CODE]

3037^67-1 and 1481^73-1 have had sufficient ECM done by Oscar aka Lorgix.

[QUOTE=wblipp;414272]The C147 from [URL="http://factordb.com/index.php?id=1100000000438760845"]P160+1[/URL] needs a polynomial
Yoyo@home has completed ECM to 1/3 of the composite's size[/QUOTE]

[CODE]N: 700619077413420894750436681560885623758820517532979701276061496904519523576134810519520114731553730816771566997439909882226456160462335711095896043
# expecting poly E from 7.89e-12 to > 9.08e-12
R0: -8876194976631718267602761783
R1: 601835804704541
A0: 1136378693452802858539011805391250
A1: 53457346174799127164640439415
A2: -36015991028289437807123
A3: -4238559135640464673
A4: 1871801733846
A5: 12715920
# skew 234584.33, size 2.819e-14, alpha -6.721, combined = 8.011e-12 rroots = 5[/CODE]

[QUOTE=wblipp;414534]The C155 from [URL="http://factordb.com/index.php?id=1100000000805072601"]P172+1[/URL] needs a polynomial

Yoyo@home has completed ECM to 1/3 the composite's size[/QUOTE]

[CODE]N: 27394866798951641850620978819851383993304495259398963038668954040287247868234740089800537784246476517329072310873074320132632739078998848852158347502828227
# expecting poly E from 2.73e-12 to > 3.14e-12
R0: -625067905257568521152444299113
R1: 1985761569746047
A0: 5156278169675654790285856050616661024
A1: 43685191399971368372304808017998
A2: 2642090624816573600058958
A3: -15263564525060612741
A4: -64224886164
A5: 287100
# skew 3288227.42, size 4.980e-15, alpha -7.137, combined = 2.929e-12 rroots = 5[/CODE]

[QUOTE=wblipp;414534]Also the C161 from [URL="http://factordb.com/index.php?id=1100000000438763868"]P235+1[/URL] needs a polynomial
Yoyo@home has completed ECM to 1/3 the composite's size[/QUOTE]

[CODE]N: 10096904174539723226517429339174103549954612595572907449004228518536106246130163441328194386387550073223591748996407909377643286693359512946607050787891837163313
# expecting poly E from 1.25e-12 to > 1.44e-12
R0: -7566987794097168051794849970657
R1: 834652135119829
A0: -243647494325130487692455928079190950096
A1: 338668250601808266955426067331706
A2: -7883385754476929038500968
A3: -103306482877709575951
A4: -254834804646
A5: 406980
# skew 5326055.24, size 1.335e-15, alpha -7.375, combined = 1.337e-12 rroots = 3[/CODE]

I'm happy to push the C161; I really expect a C147, and probably a C155, can be handled locally in less time than waiting for it to get to the front of the 14e queue.

[QUOTE=fivemack;415936]I'm happy to push the C161; I really expect a C147, and probably a C155, can be handled locally in less time than waiting for it to get to the front of the 14e queue.[/QUOTE]

Yes, of course. The [URL="http://www.mersenneforum.org/showpost.php?p=408161&postcount=167"]guidelines[/URL] say C155 to C170 for GNFS. I am prepping Pascal's P+1 numbers and forgot which ones go where. Please ignore all postings for all numbers smaller than C155 - or C156 or whatever is right. I'll be more careful.

William

Oscar, aka Lorgix, has run ECM beyond 2/9 the SNFS size for

4001^67-1
3853^67-1

C193_146_35
 

Another slow sieving 14e candidate from the xyyx world, C193_146_35. It withstood t50 by me with no factors found.

[QUOTE=swellman;416725]Another slow sieving 14e candidate from the xyyx world, C193_146_35. It withstood t50 by me with no factors found.[/QUOTE]

Sounds good to me; since you call it a 'slow sieving candidate' I guess you have a polynomial and parameters already. Post them here and I'll add them to the queue.