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 statusMnStatusDetails152700371Composite: proven not-prime with PRP test TFNo factors below 279TF target 277 P-1B1 = 1281000B2 = 996369660 PRPStatusDateUserResidueShiftTypeBaseVerified2025-01-09GdSE2234217B143F0C7013 HistoryDateUserTypeResult2025-01-11PappyCERTPRP CertificationCERT proof power = 10Proof certified good2025-01-10GdSNFno factor from 2^78 to 2^792025-01-10GdSNFno factor from 2^77 to 2^782025-01-10GdSNFno factor from 2^76 to 2^772025-01-09GdSC-PRPE2234217B143F0C7PRP proof power = 10PRP: VerifiedProof certified good2024-09-24Luke DurantNF-PM1B1=1281000, B2=9963696602024-08-06SRBaseNFno factor from 2^75 to 2^762023-02-08SRBaseNFno factor from 2^74 to 2^752021-11-14SRBaseNFno factor from 2^73 to 2^742017-10-28Will EdgingtonNFno factor from 2^72 to 2^732017-04-26symallaNFno factor from 2^71 to 2^722017-04-24Andrew BNFno factor from 2^70 to 2^712017-04-22La GüiraNFno factor from 2^69 to 2^702017-02-24rubikvn2100NFno factor from 2^68 to 2^692016-04-24PALKOTAMASNFno factor from 2^67 to 2^682015-04-01vwflat4NFno factor from 2^66 to 2^672013-01-23sasaki3NFno factor from 2^65 to 2^662011-01-17sasaki3NFno factor from 2^64 to 2^652010-07-141997rj7NFno factor from 2^63 to 2^64