Exponent Range: to+ above minimum exponent Include full ECM history (every "NF-ECM" result, slow) Include expired assignments Show software version in historyGet statusMnDetails53917841Composite: proven not-prime with Lucas-Lehmer testNo factors below 276TF target 273P-1B1 = 570000B2 = 12967500LLStatusDateUserResidueShiftSoftwareVerified2011-11-28Dubslow53C2FEF05B08495526727195Windows 64-bit,Prime95,v26.6,build 3Verified2018-06-04-anonymous-53C2FEF05B08495553157176Windows 64-bit,Prime95,v28.9,build 2HistoryDateUserTypeResult2020-06-27-anonymous-NFno factor TF: 75-762020-06-25-anonymous-NFno factor TF: 74-752019-07-13Jon PaceNFno factor TF: 73-742018-06-04-anonymous-C-LL53C2FEF05B0849552016-02-13AirSquirrelsNFno factor TF: 72-732015-12-18-anonymous-NFno factor TF: 71-722011-11-28DubslowC-LL53C2FEF05B0849552011-11-04DubslowNF-PM1B1=570000, B2=12967500, E=122011-10-17DubslowNFno factor TF: 69-712011-10-05rduerrNFno factor TF: 68-692009-05-08richardb888NFno factor TF: 67-682009-02-24jfarekNFno factor TF: 66-672009-02-22jfarekNFno factor TF: 65-662008-12-22Sturle SundeNFno factor TF: 64-652008-09-08-anonymous-NFno factor TF: 1-642007-10-291997rj7NFno factor TF: 1-632004-06-121997rj7NFno factor TF: 1-602002-08-10-anonymous-NFno factor TF: 1-582001-08-24-anonymous-NFno factor TF: 1-572000-05-31-anonymous-NFno factor TF: 1-562000-03-01-anonymous-NFno factor TF: 1-542000-01-12-anonymous-NFno factor TF: 1-531999-12-08-anonymous-NFno factor TF: 1-53