1481_73_minus1 factors
 

[B]1481_73_minus1[/B]
[code]prp61 factor: 4352062441332548294398184687143563450494955252275036880750451
prp166 factor: 1495184611138708583472481598147317824803516034184600169056727793936433151790432063847157688300777822499373832335477142920694106271411995968037295133999334398545830391
[/code]
Log attached.

4001^67-1 done
 

[code]
Wed Dec 16 13:32:08 2015 p78 factor: 131111057430132915609670164300408311079195795306005239682289352312979588496053
Wed Dec 16 13:32:08 2015 p159 factor: 156978925116950077405370622322575730796675460547553584879273933674322748102434340221418332380466358460037630016402016427736459570445417823851677173745535933331
[/code]

45.5 hours on somewhat-loaded E5-2650v2 for 8.8M density-120 matrix

Taking 3853_67_minus1

C222_117_100b
 

I can take care of [B]C222_117_100b[/B].

I'll take C164_3408_1595.

Finally got matrix built for 142^141+141^142, now in LA. Should be factored on or about Jan 20.

3853^67-1 done
 

[code]
Sat Dec 19 01:50:20 2015 p74 factor: 16694496988384378883435130395075555364495175454017235109090124394509234879
Sat Dec 19 01:50:20 2015 p112 factor: 2136180266804212577144649364923737757939274190371082165985972947594685559382490172205625430878564448411797220189
[/code]

31 hours for 8.38M density-120 matrix on E5/2650v2 -t7. Log attached.

Taking W_749.

GW_3_474 done
 

[code]
Sun Dec 27 10:17:35 2015 prp103 factor: 3300313351291788221821570209342688546968862339690791140914246729746566203285115677561793606793245332877
Sun Dec 27 10:17:35 2015 prp120 factor: 128619934491195735229945375602171651694124194992056327270477043193010775326284863910859454357881657374000661432455833431
[/code]

9.9 hours for 5.1M matrix on i7-4930K -t6; wildly over-sieved for a number this small. Log attached. Target_density=130 failed to make a matrix ('Sat Dec 26 17:45:04 2015 matrix needs more columns than rows; try adding 2-3% more relations') but td=120 worked.

I'll be starting F1297 when the i7-5820K machine arrives on Tuesday.

12_226_plus_7_226
 

[CODE]p90 factor: 109627660849176738661801173345265464085101112781604570770691274565853908369887661133139273
p145 factor: 4036226653073711192985805697940397008439710128238021151300534282077874197139137188623805282752029534804565098862485012458739181953692546332984213[/CODE]

C164_3408_1595 Factored
 

[url=http://www.factordb.com/index.php?id=1100000000805118485]p76*p89[/url]