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 statusMnStatusDetails138731149Composite: proven not-prime with PRP test TFNo factors below 277TF target 277 P-1B1 = 1160000B2 = 1120002840 PRPStatusDateUserResidueShiftTypeBaseVerified2025-09-02mewturn45583A54D7CD7C0E013 HistoryDateUserTypeResult2025-09-04Victor GritsCERTPRP CertificationCERT proof power = 7Proof certified good2025-09-02mewturnC-PRP45583A54D7CD7C0EPRP proof power = 7PRP: VerifiedProof certified good2024-09-21Luke DurantNF-PM1B1=1160000, B2=11200028402024-08-03RichardNFno factor from 2^76 to 2^772024-07-17SRBaseNFno factor from 2^75 to 2^762023-01-15SRBaseNFno factor from 2^74 to 2^752021-08-02SRBaseNFno factor from 2^73 to 2^742020-10-23SRBaseNFno factor from 2^72 to 2^732017-02-14Michael.ReillyNFno factor from 2^71 to 2^722017-02-11curtiscNFno factor from 2^70 to 2^712017-02-06proxy2222NFno factor from 2^69 to 2^702017-02-06proxy2222NFno factor from 2^68 to 2^692016-03-02dbaughNFno factor from 2^67 to 2^682015-01-31el groccoNFno factor from 2^66 to 2^672012-11-19HBendtzNFno factor from 2^65 to 2^662010-12-04ZIM30NFno factor from 2^64 to 2^652010-06-12sasaki3NFno factor from 2^63 to 2^64