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 statusMnStatusDetails119916271Composite: proven not-prime with PRP test TFNo factors below 277TF target 276 P-1B1 = 538000B2 = 19073754 PRPStatusDateUserResidueShiftTypeBaseVerified2024-04-14MirraA1D8B9FF786F66F2013 HistoryDateUserTypeResult2024-04-15thunderCERTPRP CertificationCERT proof power = 8Proof certified good2024-04-14MirraC-PRPA1D8B9FF786F66F2PRP proof power = 8PRP: VerifiedProof certified good2023-02-21Jwb52zNF-PM1B1=538000, B2=190737542022-05-22TheJudgerNFno factor from 2^76 to 2^772021-07-10TheJudgerNFno factor from 2^75 to 2^762021-07-10TheJudgerNFno factor from 2^74 to 2^752015-06-08Ruediger EckhardNFno factor from 2^73 to 2^742015-06-03Ruediger EckhardNFno factor from 2^72 to 2^732015-06-03Ruediger EckhardNFno factor from 2^71 to 2^722015-05-27Mihai PredaNFno factor from 2^70 to 2^712015-05-04Mihai PredaNFno factor from 2^69 to 2^702015-04-25Mihai PredaNFno factor from 2^68 to 2^692015-04-14Mihai PredaNFno factor from 2^67 to 2^682015-01-10RichardNFno factor from 2^66 to 2^672012-07-29Dalos LeeNFno factor from 2^65 to 2^662010-10-18oilwarzonedotcomNFno factor from 2^64 to 2^652010-05-16Waldir Walter JuniorNFno factor from 2^63 to 2^64