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 statusMnStatusDetails150581413No known factors, not tested for primality TFNo factors below 278TF target 277 P-1B1 = 774000B2 = 37626540 HistoryDateUserTypeResult2025-07-13RichardNFno factor from 2^77 to 2^782025-01-16jeriffeeNFno factor from 2^76 to 2^772024-09-13Ryan PropperNF-PM1B1=774000, B2=376265402024-05-11La GüiraNFno factor from 2^75 to 2^762023-01-02BorekNFno factor from 2^74 to 2^752021-11-30SRBaseNFno factor from 2^73 to 2^742017-07-16KishNFno factor from 2^72 to 2^732017-07-14EPFNFno factor from 2^71 to 2^722017-07-06Ryan PropperNFno factor from 2^70 to 2^712017-07-05Ryan PropperNFno factor from 2^69 to 2^702016-07-07Josh FamestadNFno factor from 2^68 to 2^692016-04-15ANONYMOUSNFno factor from 2^67 to 2^682015-01-04el groccoNFno factor from 2^66 to 2^672013-01-14gucsNFno factor from 2^65 to 2^662011-01-12sasaki3NFno factor from 2^64 to 2^652010-06-22Charles A. MorrisNFno factor from 2^63 to 2^64