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 statusMnStatusDetails148659521Composite: proven not-prime with PRP test TFNo factors below 277TF target 277 P-1B1 = 1352000B2 = 1798473600 PRPStatusDateUserResidueShiftTypeBaseVerified2024-08-20S00030781B307D6871871F013 HistoryDateUserTypeResult2025-04-23ihnlNFno factor from 2^76 to 2^772024-08-20soncekCERTPRP CertificationCERT proof power = 8Proof certified good2024-08-20S00030C-PRP781B307D6871871FPRP proof power = 8PRP: VerifiedProof certified good2024-07-31SRBaseNFno factor from 2^75 to 2^762024-07-16Luke DurantNF-PM1B1=1352000, B2=17984736002023-02-03SRBaseNFno factor from 2^74 to 2^752021-11-12SRBaseNFno factor from 2^73 to 2^742016-12-14Patrick MeyerNFno factor from 2^72 to 2^732016-12-13guruNFno factor from 2^71 to 2^722016-12-13guruNFno factor from 2^70 to 2^712016-12-13guruNFno factor from 2^69 to 2^702016-12-10treborNFno factor from 2^68 to 2^692016-04-03DerekNFno factor from 2^67 to 2^682015-03-12Karol TNFno factor from 2^66 to 2^672013-01-06HBendtzNFno factor from 2^65 to 2^662011-01-09RichardNFno factor from 2^64 to 2^65