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 statusMnStatusDetails137516543Composite: proven not-prime with PRP test TFNo factors below 277TF target 277 P-1B1 = 676000B2 = 31393950 PRPStatusDateUserResidueShiftTypeBaseVerified2025-03-16George WoltmanE45866ECACE50D23013 HistoryDateUserTypeResult2025-03-16Zhang BingbingCERTPRP CertificationCERT proof power = 10Proof certified good2025-03-16George WoltmanC-PRPE45866ECACE50D23PRP proof power = 10PRP: VerifiedProof certified good2024-09-18Ryan PropperNF-PM1B1=676000, B2=313939502024-07-22Luke DurantNFno factor from 2^76 to 2^772024-07-13SRBaseNFno factor from 2^75 to 2^762023-01-12SRBaseNFno factor from 2^74 to 2^752021-08-04SRBaseNFno factor from 2^73 to 2^742020-10-23SRBaseNFno factor from 2^72 to 2^732016-03-04SourceBinary.comNFno factor from 2^71 to 2^722016-02-29guruNFno factor from 2^70 to 2^712016-02-29guruNFno factor from 2^69 to 2^702016-02-25Ready4PrimeTimeNFno factor from 2^68 to 2^692016-02-23dbaughNFno factor from 2^67 to 2^682015-02-03Thomas StorkNFno factor from 2^66 to 2^672012-11-12ALSNFno factor from 2^65 to 2^662010-12-01sasaki3NFno factor from 2^64 to 2^652010-06-11Torchwood InstituteNFno factor from 2^63 to 2^64