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 statusMnStatusDetails140309353Composite: proven not-prime with PRP test TFNo factors below 277TF target 277 P-1B1 = 1191000B2 = 1351510710 PRPStatusDateUserResidueShiftTypeBaseVerified2025-05-21Yu ZhuA247407729FF81FF013 HistoryDateUserTypeResult2025-05-21ChuckCERTPRP CertificationCERT proof power = 10Proof certified good2025-05-21Yu ZhuC-PRPA247407729FF81FFPRP proof power = 10PRP: VerifiedProof certified good2024-09-26Luke DurantNF-PM1B1=1191000, B2=13515107102024-08-29Ryan PropperNFno factor from 2^76 to 2^772023-11-17tscNFno factor from 2^75 to 2^762023-01-18SRBaseNFno factor from 2^74 to 2^752021-11-02SRBaseNFno factor from 2^73 to 2^742020-10-25SRBaseNFno factor from 2^72 to 2^732016-04-03SourceBinary.comNFno factor from 2^71 to 2^722016-03-29Ready4PrimeTimeNFno factor from 2^70 to 2^712015-05-07Judge HaleNFno factor from 2^69 to 2^702015-05-07Judge HaleNFno factor from 2^68 to 2^692015-05-07Judge HaleNFno factor from 2^67 to 2^682015-02-14Andrew BNFno factor from 2^66 to 2^672012-11-28Mr-PlonkNFno factor from 2^65 to 2^662010-12-10MattNFno factor from 2^64 to 2^652010-06-14xiaowuc1NFno factor from 2^63 to 2^64