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 statusMnStatusDetails148524049Composite: proven not-prime with PRP test TFNo factors below 277TF target 277 P-1B1 = 1221000B2 = 1183777320 PRPStatusDateUserResidueShiftTypeBaseVerified2024-11-12JohnColville82040F97E915CE6414547856413 HistoryDateUserTypeResult2024-12-03James HeinrichNFno factor from 2^76 to 2^772024-11-13XyzzyCERTPRP CertificationCERT proof power = 10Proof certified good2024-11-12JohnColvilleC-PRP82040F97E915CE64PRP proof power = 10PRP: VerifiedProof certified good2024-09-18Luke DurantNF-PM1B1=1221000, B2=11837773202024-08-11James HeinrichNFno factor from 2^76 to 2^772024-07-27SRBaseNFno factor from 2^75 to 2^762023-02-03SRBaseNFno factor from 2^74 to 2^752021-11-14SRBaseNFno factor from 2^73 to 2^742016-07-06DerekNFno factor from 2^72 to 2^732016-07-05JMGarciaNFno factor from 2^71 to 2^722016-06-29DerekNFno factor from 2^70 to 2^712016-06-29La GüiraNFno factor from 2^69 to 2^702016-06-13Josh FamestadNFno factor from 2^68 to 2^692016-04-03DerekNFno factor from 2^67 to 2^682015-03-11vwflat4NFno factor from 2^66 to 2^672013-01-05Charles A. MorrisNFno factor from 2^65 to 2^662011-01-07RichardNFno factor from 2^64 to 2^65