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 statusMnStatusDetails124662259Composite: proven not-prime with PRP test TFNo factors below 277TF target 277 P-1B1 = 564000B2 = 19344906 PRPStatusDateUserResidueShiftTypeBaseVerified2024-03-27belezbar3F8331B298F57D04266259713 HistoryDateUserTypeResult2024-05-08James HeinrichNFno factor from 2^70 to 2^712024-03-27Sam WalesCERTPRP CertificationCERT proof power = 8Proof certified good2024-03-27belezbarC-PRP3F8331B298F57D04PRP proof power = 8PRP: VerifiedProof certified good2024-02-15belezbarNF-PM1B1=564000, B2=193449062022-07-06TheJudgerNFno factor from 2^76 to 2^772022-07-06TheJudgerNFno factor from 2^75 to 2^762022-07-06TheJudgerNFno factor from 2^74 to 2^752021-07-08SRBaseNFno factor from 2^73 to 2^742020-10-07tscNFno factor from 2^72 to 2^732015-10-27arnaudNFno factor from 2^71 to 2^722015-09-30Josh FamestadNFno factor from 2^70 to 2^712015-07-04Judge HaleNFno factor from 2^69 to 2^702015-07-04Judge HaleNFno factor from 2^68 to 2^692015-07-04Judge HaleNFno factor from 2^67 to 2^682014-12-22Mr-PlonkNFno factor from 2^66 to 2^672012-09-05tscNFno factor from 2^65 to 2^662010-10-29Charles A. MorrisNFno factor from 2^64 to 2^652010-07-23Mr-PlonkNFno factor from 2^63 to 2^64