Exponent Range: to+ above minimum exponent Output results in HTML format Output results in text-only format Output results in plain-text format Show full details (current assignment, history, LL residues) Include full ECM history (every "NF-ECM" result, slow) Include ancient history logs (1997-2007, slow) Include expired assignments Show software version in historyGet statusMnStatusDetails195182887Composite: 1 known prime factor FactoredFactorDigitsBitsDate25382731878917008710492271.12016-12-05 23:22:21 HistoryDateUserTypeResult2016-12-05Sergey NosovFFactor: 2538273187891700871049 / TF: 68-72*2016-08-30RDbrvnNFno factor from 2^67 to 2^682015-09-11ANONYMOUSNFno factor from 2^66 to 2^672013-06-23HBendtzNFno factor from 2^65 to 2^662011-04-20dslNFno factor from 2^64 to 2^652010-08-06sasaki3NFno factor from 2^63 to 2^64