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 statusMnStatusDetails156013961No known factors, not tested for primality TFNo factors below 278TF target 278 HistoryDateUserTypeResult2025-05-26brian-nebiusNFno factor from 2^77 to 2^782024-10-08k0r3NFno factor from 2^76 to 2^772024-08-15SRBaseNFno factor from 2^75 to 2^762024-05-06GregNFno factor from 2^68 to 2^692023-02-26SRBaseNFno factor from 2^74 to 2^752021-11-15SRBaseNFno factor from 2^73 to 2^742018-01-07Hanzhi ZhouNFno factor from 2^72 to 2^732017-11-25treborNFno factor from 2^71 to 2^722017-10-17treborNFno factor from 2^70 to 2^712017-08-17el groccoNFno factor from 2^69 to 2^702016-10-29Josh FamestadNFno factor from 2^68 to 2^692016-05-05rubikvn2100NFno factor from 2^67 to 2^682015-04-13guruNFno factor from 2^66 to 2^672013-02-05prgamma10NFno factor from 2^65 to 2^662011-01-24MattNFno factor from 2^64 to 2^652010-06-26subgeniusNFno factor from 2^63 to 2^64