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 statusMnStatusDetails160727659Composite: proven not-prime with PRP test TFNo factors below 278TF target 278 P-1B1 = 1350000B2 = 1529801130 PRPStatusDateUserResidueShiftTypeBaseVerified2025-02-22GdSF159D0ECCA688951013 HistoryDateUserTypeResult2025-05-26ihnlNFno factor from 2^76 to 2^782025-02-23Nicholas HodsonCERTPRP CertificationCERT proof power = 10Proof certified good2025-02-22GdSC-PRPF159D0ECCA688951PRP proof power = 10PRP: VerifiedProof certified good2024-10-06Luke DurantNF-PM1B1=1350000, B2=15298011302024-08-29SRBaseNFno factor from 2^75 to 2^762023-03-01SRBaseNFno factor from 2^74 to 2^752021-11-24SRBaseNFno factor from 2^73 to 2^742018-02-22SRS TechnologyNFno factor from 2^72 to 2^732018-02-22SRS TechnologyNFno factor from 2^71 to 2^722018-01-20nate.andersNFno factor from 2^70 to 2^712018-01-16La GüiraNFno factor from 2^69 to 2^702017-03-23XolotlNFno factor from 2^68 to 2^692016-03-09XZTNFno factor from 2^67 to 2^682015-05-04guruNFno factor from 2^66 to 2^672013-02-23Charles A. MorrisNFno factor from 2^65 to 2^662011-02-02runeskNFno factor from 2^64 to 2^652010-06-29Torchwood InstituteNFno factor from 2^63 to 2^64