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 statusMnStatusDetails111485149Composite: proven not-prime with PRP test TFNo factors below 277TF target 276 P-1B1 = 509000B2 = 18411000 PRPStatusDateUserResidueShiftTypeBaseVerified2022-12-04Yury Vorobyov263B3D4CC790113610588488813 HistoryDateUserTypeResult2022-12-04curtiscCERTPRP CertificationCERT proof power = 7Proof certified good2022-12-04Yury VorobyovC-PRP263B3D4CC7901136PRP proof power = 7PRP: VerifiedProof certified good2022-03-18Ryan PropperNF-PM1B1=509000, B2=184110002021-01-20arpcarNFno factor from 2^76 to 2^772020-12-14arpcarNFno factor from 2^75 to 2^762020-11-22arpcarNFno factor from 2^74 to 2^752020-07-27jwnutterNFno factor from 2^73 to 2^742020-04-20SRBaseNFno factor from 2^72 to 2^732019-01-16Niels_Mache_NextcloudNFno factor from 2^71 to 2^722015-08-10SMoffatNFno factor from 2^70 to 2^712014-11-15Simon HarrisonNFno factor from 2^69 to 2^702014-11-13Smok_bmv NFno factor from 2^68 to 2^692013-11-03SMoffatNFno factor from 2^67 to 2^682013-10-12Cow_tippingNFno factor from 2^66 to 2^672012-05-28subgeniusNFno factor from 2^65 to 2^662010-09-22Torchwood InstituteNFno factor from 2^64 to 2^652010-05-03sasaki3NFno factor from 2^63 to 2^64