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 statusMnStatusDetails215139391Composite: 1 known prime factor FactoredFactorDigitsBitsDate18036673774305439957912270.62018-05-20 02:55:32 HistoryDateUserTypeResult2025-04-21James HeinrichFFactor: 1803667377430543995791 / TF: 70-712018-05-20Smok_bmv FFactor: 1803667377430543995791 / TF: 70-71*2018-05-20Smok_bmv NFno factor from 2^69 to 2^702017-12-22Walt J. RimmerNFno factor from 2^68 to 2^692016-09-07DerekNFno factor from 2^67 to 2^682015-10-23RichardNFno factor from 2^66 to 2^672012-07-08america64NFno factor from 2^65 to 2^662011-05-26sasaki3NFno factor from 2^64 to 2^65