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 statusMnStatusDetails902200583Composite: 1 known prime factor FactoredFactorDigitsBitsDate28320253055899419028012271.32019-03-07 07:21:15 HistoryDateUserTypeResult2025-03-22James HeinrichFFactor: 2832025305589941902801 / TF: 71-722024-05-02mewturn_doublecheckNFno factor from 2^68 to 2^712019-03-07Smok_bmv FFactor: 2832025305589941902801 / TF: 71-72*2018-12-03ConductorNFno factor from 2^70 to 2^712017-02-19ramgeisNFno factor from 2^69 to 2^702016-10-23ConductorNFno factor from 2^68 to 2^692016-06-09ConductorNFno factor from 2^67 to 2^682015-01-30Gordon SpenceNFno factor from 2^66 to 2^672013-04-25ramgeisNFno factor from 2^65 to 2^662011-01-18lindeeNFno factor from 2^64 to 2^652010-06-24lindeeNFno factor from 2^63 to 2^64