Exponent Range: to+ above minimum exponent Include full ECM history (every "NF-ECM" result, slow) Include expired assignments Show software version in historyGet statusMnDetails49812869Composite: proven not-prime with Lucas-Lehmer testNo factors below 274TF target 273P-1B1 = 1000000B2 = 20000000LLStatusDateUserResidueShiftSoftwareBad2010-09-04-anonymous-10A02B946A804B1D46127842Windows,Prime95,v25.9,build 3Verified2016-02-08cuBerBruce8A076EA2F42C29B010611806Windows 64-bit,Prime95,v28.7,build 1Verified2016-09-12endless_mike8A076EA2F42C29B035220948Linux 64-bit,Prime95,v28.9,build 2HistoryDateUserTypeResult2019-09-17Sid & AndyNF-PM1B1=1000000, B2=20000000, E=122017-12-03Oliver KruseNFno factor TF: 72-742017-11-24monstNFno factor TF: 72-732016-09-12endless_mikeC-LL8A076EA2F42C29B02016-02-08cuBerBruceC-LL8A076EA2F42C29B02015-12-06-anonymous-NFno factor TF: 71-722015-06-14LaurVNFno factor TF: 70-712015-06-12LaurVNFno factor TF: 69-702010-09-04-anonymous-C-LL10A02B946A804B1D2010-06-26-anonymous-NF-PM1B1=7800002008-09-06ptcrNFno factor TF: 1-69