Exponent Range: to+ above minimum exponent Include full ECM history (every "NF-ECM" result, slow) Include expired assignments Show software version in historyGet statusMnDetails42351877Composite: proven not-prime with Lucas-Lehmer testNo factors below 274TF target 272P-1B1 = 710000B2 = 710000LLStatusDateUserResidueShiftSoftwareBad2010-06-19David_HarveyC3076F9F059E839531884594Windows,Prime95,v25.11,build 2Verified2015-10-23George WoltmanA9654F049DA24B8338492433Windows 64-bit,Prime95,v28.6,build 1Verified2016-09-14Mark RoseA9654F049DA24B8316837952Linux 64-bit,Prime95,v28.9,build 2HistoryDateUserTypeResult2020-01-10-anonymous-NFno factor TF: 73-742018-08-08-anonymous-NFno factor TF: 72-732016-09-14Mark RoseC-LLA9654F049DA24B832015-10-23George WoltmanC-LLA9654F049DA24B832015-07-28GregNFno factor TF: 71-722015-03-16Mark RoseNFno factor TF: 70-712015-02-14Architects CubedNFno factor TF: 69-702014-03-07LaurVNFno factor TF: 68-692010-06-19David_HarveyC-LLC3076F9F059E83952009-03-30-anonymous-NF-PM1B1=7100002007-07-04ITSNFno factor TF: 1-68