C160_121xx489_13 factored
 

[QUOTE=richs;483487]Reserving Phi_13(largest factor of Phi_11(307))[/QUOTE]

aka C160_121xx489_13

[CODE]p74 factor: 40296988577962720918778837216475233936098364133694147779271378412110285807
p87 factor: 113373741268416831940959085643890665810786731129173626268521043208548880276648969964901[/CODE]

Approximately 57.2 hours on 2 threads Core i3-2310M with 4 GB memory for a 5.94M matrix at TD = 70 (didn't bother to try any higher densities since this one was overseived).
Log attached and redacted log at [URL="https://pastebin.com/p3egGzBF"]https://pastebin.com/p3egGzBF[/URL].

Factors reported to Factor Database.

5869^71-1 (15e) factored
 

342M unique relations built a 20.3M matrix using TD=140.
[CODE]p71 factor: 62024235665618512576697536008160378267767304477600170952967411606022181
p194 factor: 10162492759851711215493338717881735277578039728702372316780593354149076259491935013397148761745499930774000238458300561871390485611797222247270821447217601901195219140452404515714784497438061271[/CODE]
[url]https://pastebin.com/mRGjTwdB[/url]

Taking C169_15428908531_23b

Reserving C186_134_77 (15e)

C220_148xx049_19 remains unreserved right? I'll start downloading relations.

Looks unreserved to me; I have reserved it for you

factors
 

[B]C191 from Phi_5(largest_factor(Phi_23(1009)))[/B]
a.k.a.C191_279xx283_5
or as I like to call it, the C191 from (27945714132675033142899109225439212386442031501005140283^5-1)/smallfactors
[code]Sun Apr 08 14:28:16 2018 p74 factor: 15626382775384692333419535084750741838727764681892018560625375689328636741
Sun Apr 08 14:28:16 2018 p118 factor: 1060927068363295920843997922057755434493742112717640472074895235538641668893476337366547906110082591116941822410140471[/code]Factors uploaded to factordb, log attached and at [URL]https://pastebin.com/sFjptRab[/URL]

Taking [B]C217_67411_47[/B]

L2675B factored
 

259 total relations - 194 unique relations built a 12.9M matrix using TD=108. (TD=112 failed)
Solve time about 123 hours (-t 4 on a 2500K).
[CODE]p59 factor: 27081003959745788371641070659237582329168108955795178637351
p160 factor: 2827183399078790611460579560319638331041745663997165970594154348690207033200975504887442210911860865396570903272894059148496758654638949663676512964994806385651[/CODE]
[url]https://pastebin.com/JQMU6UQu[/url]

C169_15428908531_23 done
 

[code]
Tue Apr 10 06:39:02 2018 p66 factor: 717295347633318030342138976627507745788709012271600790244007994387
Tue Apr 10 06:39:02 2018 p103 factor: 3354958610042892724493175589472265351495313262855580529260919733753185179472372450834182896479673536199
[/code]

20.3 hours for 8.84M density-138 (140 didn't work) matrix on 14 cores i9-7920X.

Log attached and at [url]https://pastebin.com/CYCVpGL1[/url]

C217_67411_47 Factored
 

Took slightly over 12 hours using 8 cores On a 5960 X at 3 GHz

[code]
Tue Apr 10 16:06:16 2018 p97 factor: 1207342092151075727707215357353817141146116403942416973022741060854755523813117118109775613292399
Tue Apr 10 16:06:16 2018 p121 factor: 1174715423960493259963020896063093474393448277791261021723195996307474999056670584903862166390359725881230476653103802093
[/code]