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 statusMnStatusDetails159051209Composite: proven not-prime with PRP test TFNo factors below 276TF target 278 P-1B1 = 1291000B2 = 836858880 PRPStatusDateUserResidueShiftTypeBaseVerified2025-02-22GdSA23366B75F413C20013 HistoryDateUserTypeResult2025-02-22Michael PawellekCERTPRP CertificationCERT proof power = 10Proof certified good2025-02-22GdSC-PRPA23366B75F413C20PRP proof power = 10PRP: VerifiedProof certified good2024-10-03Luke DurantNF-PM1B1=1291000, B2=8368588802024-08-26SRBaseNFno factor from 2^75 to 2^762023-03-04SRBaseNFno factor from 2^74 to 2^752021-11-21SRBaseNFno factor from 2^73 to 2^742018-05-24Craig JohnsonNFno factor from 2^72 to 2^732018-05-23RuzovejNFno factor from 2^71 to 2^722018-05-16proxy2222NFno factor from 2^70 to 2^712018-02-20YxinityNFno factor from 2^69 to 2^702017-03-15rubikvn2100NFno factor from 2^68 to 2^692016-05-16netsurferNFno factor from 2^67 to 2^682015-04-28guruNFno factor from 2^66 to 2^672013-02-17Arne KleppestrandNFno factor from 2^65 to 2^662011-01-31DerekNFno factor from 2^64 to 2^652010-06-28sasaki3NFno factor from 2^63 to 2^64