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 statusMnStatusDetails154766483No known factors, not tested for primality TFNo factors below 278TF target 278 P-1B1 = 1048000B2 = 283781190 HistoryDateUserTypeResult2025-06-30zhangstNF-PM1B1=1048000, B2=2837811902025-06-140xNFno factor from 2^77 to 2^782024-12-08Ethan O'ConnorNFno factor from 2^76 to 2^772024-08-13SRBaseNFno factor from 2^75 to 2^762023-02-16SRBaseNFno factor from 2^74 to 2^752021-11-14SRBaseNFno factor from 2^73 to 2^742017-12-30David HruskaNFno factor from 2^72 to 2^732017-08-29David HruskaNFno factor from 2^71 to 2^722017-06-26David HruskaNFno factor from 2^70 to 2^712017-03-13La GüiraNFno factor from 2^69 to 2^702017-03-02rubikvn2100NFno factor from 2^68 to 2^692016-04-29James HintzNFno factor from 2^67 to 2^682015-04-08rubikvn2100NFno factor from 2^66 to 2^672013-02-11GrunwalderGIMPNFno factor from 2^65 to 2^662011-01-22sasaki3NFno factor from 2^64 to 2^652010-06-26AliNFno factor from 2^63 to 2^64