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 statusMnStatusDetails153314341No known factors, not tested for primality TFNo factors below 278TF target 277 P-1B1 = 1215000B2 = 723598590 HistoryDateUserTypeResult2025-07-27zhangstNFno factor from 2^77 to 2^782025-02-23whateverxequalsNF-PM1B1=1215000, B2=7235985902025-01-01Ethan O'ConnorNFno factor from 2^76 to 2^772024-08-07SRBaseNFno factor from 2^75 to 2^762023-02-14SRBaseNFno factor from 2^74 to 2^752021-11-14SRBaseNFno factor from 2^73 to 2^742016-12-03La GüiraNFno factor from 2^72 to 2^732016-12-03La GüiraNFno factor from 2^71 to 2^722016-09-08Choi4KANGNFno factor from 2^70 to 2^712016-08-05La GüiraNFno factor from 2^69 to 2^702016-08-05La GüiraNFno factor from 2^68 to 2^692016-04-26mikeblasNFno factor from 2^67 to 2^682015-04-09RichardNFno factor from 2^66 to 2^672013-01-26theSpirit83NFno factor from 2^65 to 2^662011-01-19Charles A. MorrisNFno factor from 2^64 to 2^652010-06-24sasaki3NFno factor from 2^63 to 2^64