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 statusMnStatusDetails136520213Composite: proven not-prime with PRP test TFNo factors below 277TF target 277 P-1B1 = 666000B2 = 31203270 PRPStatusDateUserResidueShiftTypeBaseVerified2024-12-11JG48D914837A859C33718977987513 HistoryDateUserTypeResult2024-12-12George WoltmanCERTPRP CertificationCERT proof power = 8Proof certified good2024-12-11JG48C-PRPD914837A859C3371PRP proof power = 8PRP: VerifiedProof certified good2024-09-12Ryan PropperNF-PM1B1=666000, B2=312032702024-06-13RichardNFno factor from 2^76 to 2^772024-06-12RichardNFno factor from 2^75 to 2^762023-01-13SRBaseNFno factor from 2^74 to 2^752021-07-29SRBaseNFno factor from 2^73 to 2^742020-11-17SRBaseNFno factor from 2^72 to 2^732016-02-21Choi4KANGNFno factor from 2^71 to 2^722015-12-24La GüiraNFno factor from 2^70 to 2^712015-09-21La GüiraNFno factor from 2^69 to 2^702015-09-21La GüiraNFno factor from 2^68 to 2^692015-09-21La GüiraNFno factor from 2^67 to 2^682015-01-31Judge HaleNFno factor from 2^66 to 2^672012-11-13RichardNFno factor from 2^65 to 2^662010-11-29Michael CNFno factor from 2^64 to 2^652010-06-11RichardNFno factor from 2^63 to 2^64