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 statusMnStatusDetails121520653Composite: 1 known prime factor FactoredFactorDigitsBitsDate25576780476680908039900072581.12024-02-25 18:19:36 P-1 factorsDateFactorB1B22024-02-252557678047668090803990007608000608000 HistoryDateUserTypeResult2024-02-25Smok_bmv F-PM1Factor: 2557678047668090803990007 / (P-1, B1=608000)2022-06-24TheJudgerNFno factor from 2^76 to 2^772021-08-20TheJudgerNFno factor from 2^75 to 2^762021-08-20TheJudgerNFno factor from 2^74 to 2^752020-03-23Niels_Mache_NextcloudNFno factor from 2^73 to 2^742020-03-23Niels_Mache_NextcloudNFno factor from 2^72 to 2^732015-07-30vats09NFno factor from 2^71 to 2^722015-06-15SMoffatNFno factor from 2^70 to 2^712013-12-17GrunwalderGIMPNFno factor from 2^69 to 2^702013-12-17GrunwalderGIMPNFno factor from 2^68 to 2^692013-12-17GrunwalderGIMPNFno factor from 2^66 to 2^682012-08-19RichardNFno factor from 2^65 to 2^662010-10-21Charles A. MorrisNFno factor from 2^64 to 2^652010-05-18ekrummeNFno factor from 2^63 to 2^64