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 statusMnStatusDetails166877617Composite: proven not-prime with PRP test TFNo factors below 276TF target 278 P-1B1 = 1393000B2 = 888201600 PRPStatusDateUserResidueShiftTypeBaseVerified2024-10-06curtiscCEDEC1314A0D3CF26005357313 HistoryDateUserTypeResult2024-10-19George WoltmanCERTPRP CertificationCERT proof power = 8Proof certified good2024-10-06curtiscC-PRPCEDEC1314A0D3CF2PRP proof power = 8PRP: VerifiedProof certified good2024-09-10SRBaseNFno factor from 2^75 to 2^762024-08-23Luke DurantNF-PM1B1=1393000, B2=8882016002023-03-16SRBaseNFno factor from 2^74 to 2^752021-12-12SRBaseNFno factor from 2^73 to 2^742018-11-26Oliver KruseNFno factor from 2^72 to 2^732018-07-31di1111NFno factor from 2^71 to 2^722018-07-31di1111NFno factor from 2^70 to 2^712014-12-03La GüiraNFno factor from 2^69 to 2^702014-12-03La GüiraNFno factor from 2^68 to 2^692014-12-03La GüiraNFno factor from 2^67 to 2^682014-06-16Gordon SpenceNFno factor from 2^66 to 2^672013-03-18Mr-PlonkNFno factor from 2^65 to 2^662011-02-12runeskNFno factor from 2^64 to 2^652010-07-08garoNFno factor from 2^63 to 2^64