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 statusMnStatusDetails137974919Composite: proven not-prime with PRP test TFNo factors below 277TF target 277 P-1B1 = 1172000B2 = 1313968590 PRPStatusDateUserResidueShiftTypeBaseVerified2025-05-10ky0uraku195846470602CF316793444613 HistoryDateUserTypeResult2025-05-10Carlos PinhoCERTPRP CertificationCERT proof power = 9Proof certified good2025-05-10ky0urakuC-PRP195846470602CF31PRP proof power = 9PRP: VerifiedProof certified good2024-09-19Luke DurantNF-PM1B1=1172000, B2=13139685902024-07-28TheJudgerNFno factor from 2^76 to 2^772024-07-14SRBaseNFno factor from 2^75 to 2^762023-01-12SRBaseNFno factor from 2^74 to 2^752021-07-31SRBaseNFno factor from 2^73 to 2^742020-10-26SRBaseNFno factor from 2^72 to 2^732016-04-13Chang Chia-TcheNFno factor from 2^71 to 2^722016-04-05SourceBinary.comNFno factor from 2^70 to 2^712016-04-03SourceBinary.comNFno factor from 2^69 to 2^702016-03-29Choi4KANGNFno factor from 2^68 to 2^692016-03-02dbaughNFno factor from 2^67 to 2^682015-02-13RichardNFno factor from 2^66 to 2^672012-11-15Mr-PlonkNFno factor from 2^65 to 2^662010-12-04Torchwood InstituteNFno factor from 2^64 to 2^652010-06-18EPFNFno factor from 2^63 to 2^64