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 statusMnStatusDetails157656529No known factors, not tested for primality TFNo factors below 278TF target 278 HistoryDateUserTypeResult2025-04-16lazybeeNFno factor from 2^77 to 2^782025-03-30YeakomeisterNFno factor from 2^76 to 2^772024-08-22SRBaseNFno factor from 2^75 to 2^762023-02-22SRBaseNFno factor from 2^74 to 2^752021-11-20SRBaseNFno factor from 2^73 to 2^742017-10-23JMGarciaNFno factor from 2^72 to 2^732017-10-22jiboNFno factor from 2^71 to 2^722017-10-22jiboNFno factor from 2^70 to 2^712017-10-22jiboNFno factor from 2^69 to 2^702017-03-11Math_is_pureNFno factor from 2^68 to 2^692016-05-10James HintzNFno factor from 2^67 to 2^682015-04-21sasaki3NFno factor from 2^66 to 2^672013-02-12tscNFno factor from 2^65 to 2^662011-01-28AliNFno factor from 2^64 to 2^65