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 statusMnStatusDetails137479423Composite: proven not-prime with PRP test TFNo factors below 277TF target 277 P-1B1 = 676000B2 = 31127040 PRPStatusDateUserResidueShiftTypeBaseVerified2025-03-04Mirra17C891079EDC21B0013 HistoryDateUserTypeResult2025-03-04featherCERTPRP CertificationCERT proof power = 9Proof certified good2025-03-04MirraC-PRP17C891079EDC21B0PRP proof power = 9PRP: VerifiedProof certified good2024-09-17Ryan PropperNF-PM1B1=676000, B2=311270402024-07-28Luke DurantNFno factor from 2^76 to 2^772024-06-18JacobZNFno factor from 2^75 to 2^762023-01-12SRBaseNFno factor from 2^74 to 2^752021-07-31SRBaseNFno factor from 2^73 to 2^742020-10-27SRBaseNFno factor from 2^72 to 2^732016-09-15nate.andersNFno factor from 2^71 to 2^722016-09-13nate.andersNFno factor from 2^70 to 2^712016-03-10dbaughNFno factor from 2^69 to 2^702016-02-17dbaughNFno factor from 2^68 to 2^692016-02-10ssatenethNFno factor from 2^67 to 2^682015-02-04FuesslerNFno factor from 2^66 to 2^672012-11-12sasaki3NFno factor from 2^65 to 2^662010-11-30sasaki3NFno factor from 2^64 to 2^652010-06-11Charles A. MorrisNFno factor from 2^63 to 2^64