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 statusMnStatusDetails130302541Composite: proven not-prime with PRP test TFNo factors below 277TF target 277 P-1B1 = 1050000B2 = 751496130 PRPStatusDateUserResidueShiftTypeBaseVerified2024-09-23Luke Durant258BF09E56027B34711865313 HistoryDateUserTypeResult2024-09-24CavalicoCERTPRP CertificationCERT proof power = 8Proof certified good2024-09-23Luke DurantC-PRP258BF09E56027B34PRP proof power = 8PRP: VerifiedProof certified good2024-08-10Luke DurantNF-PM1B1=1050000, B2=7514961302023-06-04tottenhoffNFno factor from 2^76 to 2^772023-05-27tscNFno factor from 2^75 to 2^762022-09-30ViliamFNFno factor from 2^74 to 2^752021-07-18SRBaseNFno factor from 2^73 to 2^742020-10-22SRBaseNFno factor from 2^72 to 2^732015-12-12SMoffatNFno factor from 2^71 to 2^722015-11-29SMoffatNFno factor from 2^70 to 2^712015-11-24SMoffatNFno factor from 2^69 to 2^702015-11-13PascalBieriNFno factor from 2^68 to 2^692015-11-07SourceBinary.comNFno factor from 2^67 to 2^682015-01-17vwflat4NFno factor from 2^66 to 2^672012-10-15RichardNFno factor from 2^65 to 2^662010-11-12Charles A. MorrisNFno factor from 2^64 to 2^652010-06-01Torchwood InstituteNFno factor from 2^63 to 2^64