14731^53-1 is done: [code]
r1=2981804405629740415341040920468762312960821235686669 (pp52)
r2=1877700255154476983688496023265705956655808103880782293890283169482720959489493001649475060492433967871690588426644391048765602138437865075672010572229683533098023597 (pp166)
[/code]
Nearly an ECM miss. I ran ECM to T50 so just missed it.

Chris

8081^59-1 is factored
 

8081^59-1 = p68*p159

[CODE]p68 = 85839630462797698974834828620081581538314612501215742861165888374467
p159 = 500428573469422206862689889198481594760520559572924159329890040417411087170833125440594291154312668214673357957984481060738231756389811735113165066684925005817[/CODE]

22927381^31-1 is done: [code]
r1=104902527726793664091856191374389891835120907249211677234193513105393814402401 (pp78)
r2=616378534643776533004778820402012950680364613059637582050184700720413704722570589728763033316316878519935093575256301653177293322672783062755331 (pp144)
[/code]
That took rather longer than I expected. I don't think there are any more in my range in the roadblocks file.

Chris

[URL="http://factordb.com/index.php?id=1100000000314577168"]9787^61-1[/URL] as P51 * P190 by yoyo@home

[url="http://factordb.com/index.php?id=1100000000601550116"]5955749^31-1[/url] as p51 * p67 * p87.

[URL="http://factordb.com/index.php?id=1100000000125988225"](4019^17-1)/4018[/URL] = P58

[URL="http://factordb.com/index.php?id=1100000000517264398"](P58^5-1)/(P58-1)[/URL] was #107 on the [URL="http://www.lirmm.fr/~ochem/opn/mwrb2000.txt"]most wanted list[/URL]

NFS@home Sieved this and Tom Womack has post-processed it. The remaining residual was P101 * P129.

[URL="http://www.factordb.com/index.php?id=1100000000507711837"]14683^53-1[/URL] as P47 * P50 * P121

I'll reserve a few from the most wanted list for ECM to T45, then SNFS if that doesn't factor them:
1907^59-1
30323^43-1
30341^43-1
30367^43-1
60231952930138111^13-1
78816007^23-1

Chris

I've just had a burst of ECM hits:
30367^43-1 [code]
********** Factor found in step 2: 21209894238211757565828145925468236887227
Found probable prime factor of 41 digits: 21209894238211757565828145925468236887227
Composite cofactor 8597162901357768936087224364316382429841551512089422173642791617794520666054528355600927339013989155371503915462775082060293948394468910018332323091 has 148 digits
[/code]60231952930138111^13-1 [code]
********** Factor found in step 1: 581213727061059778656748836293
Found probable prime factor of 30 digits: 581213727061059778656748836293
Composite cofactor 3922721484105541441838351370838451000637941949971664345395970366109469388245294096041855437803834866479605632047317214278756245155667930822798988015533086765811416224428301 has 172 digits
[/code]78816007^23-1 [code]
********** Factor found in step 2: 492593009695695502979630606406557
Found probable prime factor of 33 digits: 492593009695695502979630606406557
Composite cofactor 1079019250874958676274474392264563885220576364820688672786374729801874628302567056943943094554882327993072869000496746839153222976551469453501 has 142 digits
********** Factor found in step 2: 1184754505738364633536108966357649219
Found probable prime factor of 37 digits: 1184754505738364633536108966357649219
Composite cofactor 448630781933036426532815245912216006383986122427243506828887676236346595774911611663962882376300239505818674106032522544278343150067733603 has 138 digits
[/code]Which caused a temporary shortage of ECM work. So I'll reserve a few more:
14029^47-1
31583^43-1
31729^43-1
31957^43-1
31991^43-1
32003^43-1

Chris

PS. Who factored 4851463^29-1?

[QUOTE=wblipp;398283]The following may be of interest - they are also ready for SNFS[INDENT]38971^47-1
4283^61-1
[strike]8081^59-1[/strike][/INDENT][/QUOTE]

Is anyone working on 38971^47-1? If not I'll do it.

Chris

I've had another burst of ECM hits:
31729^43-1 [code]
********** Factor found in step 2: 17496048784828588600134282648741457
Found probable prime factor of 35 digits: 17496048784828588600134282648741457
Probable prime cofactor 65802419734350804944352972745213825724124206840778880134962035479022233789936459416991899622295226239640610838816517192793236634873902507720579028098422603 has 155 digits
[/code]
31957^43-1 [code]
********** Factor found in step 2: 3231134832645944161617441942596955303953
Found probable prime factor of 40 digits: 3231134832645944161617441942596955303953
Probable prime cofactor 481316356931769243226386451116290827042791461503591625897820906427101444601177986114159516112077602442365604305654989272471581938409457145268205736919 has 150 digits
[/code]
So I'll reserve some more:
2559656328612645724892526531521087^7-1
32309^43-1
32443^43-1
32533^43-1
32537^43-1

Chris