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 statusMnStatusDetails477334409Composite: 1 known prime factor FactoredFactorDigitsBitsDate5213675453436428146572168.82017-12-24 19:50:38 HistoryDateUserTypeResult2017-12-24ky0urakuFFactor: 521367545343642814657 / TF: 68-692016-06-11sasakiNFno factor from 2^67 to 2^682016-04-09sasakiNFno factor from 2^66 to 2^672014-10-08Chih-Wei HuangNFno factor from 2^65 to 2^662011-12-11EPFNFno factor from 2^64 to 2^652010-03-29Architects CubedNFno factor from 2^63 to 2^64