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 statusMnStatusDetails100077401Composite: proven not-prime with PRP test TFNo factors below 277TF target 276 P-1B1 = 835000B2 = 17117500 PRPStatusDateUserResidueShiftTypeBaseVerified2020-09-29Ben DeloA8D7CCDCEFBD32515801103713 HistoryDateUserTypeResult2025-07-01JurzalNFno factor from 2^76 to 2^772020-09-29curtiscCERTPRP CertificationCERT proof power = 8Proof certified good2020-09-29Ben DeloC-PRPA8D7CCDCEFBD3251PRP proof power = 8PRP: VerifiedProof certified good2020-08-28David HruskaNF-PM1B1=835000, B2=17117500, E=62019-12-22KrieselNFno factor from 2^75 to 2^762018-11-26Gordon BowerNFno factor from 2^74 to 2^752018-11-26Gordon BowerNFno factor from 2^73 to 2^742018-11-26Gordon BowerNFno factor from 2^72 to 2^732015-02-19webbertNFno factor from 2^71 to 2^722011-03-22Craig MeyersNFno factor from 2^70 to 2^712011-03-22Craig MeyersNFno factor from 2^69 to 2^702011-03-22Craig MeyersNFno factor from 2^68 to 2^692011-03-22Craig MeyersNFno factor from 2^67 to 2^682011-02-23Craig MeyersNFno factor from 2^66 to 2^672011-01-26Craig MeyersNFno factor from 2^65 to 2^662010-08-08sasaki3NFno factor from 2^64 to 2^65