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 statusMnStatusDetails490678007Composite: 1 known prime factor FactoredFactorDigitsBitsDate572491903462794225306232375.62025-09-15 08:30:56 HistoryDateUserTypeResult2025-09-15SRBaseFFactor: 57249190346279422530623 / TF: 75-762023-12-29SRBaseNFno factor from 2^74 to 2^752022-07-02SRBaseNFno factor from 2^73 to 2^742021-03-07SRBaseNFno factor from 2^72 to 2^732020-08-23SRBaseNFno factor from 2^71 to 2^722020-05-31SRBaseNFno factor from 2^70 to 2^712018-05-22sasakiNFno factor from 2^69 to 2^702018-03-07sasakiNFno factor from 2^68 to 2^692014-06-15The MawnNFno factor from 2^66 to 2^682011-10-17delta_tNFno factor from 2^65 to 2^66