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 statusMnStatusDetails112346321Composite: proven not-prime with PRP test TFNo factors below 277TF target 276 P-1B1 = 515000B2 = 20203000 PRPStatusDateUserResidueShiftTypeBaseVerified2023-04-12Will KAD05F734CD04F63C6680574413 HistoryDateUserTypeResult2023-04-12Remi LucetCERTPRP CertificationCERT proof power = 8Proof certified good2023-04-12Will KC-PRPAD05F734CD04F63CPRP proof power = 8PRP: VerifiedProof certified good2022-05-04slandrumNF-PM1B1=515000, B2=202030002021-01-01arpcarNFno factor from 2^76 to 2^772020-12-05arpcarNFno factor from 2^75 to 2^762020-11-22arpcarNFno factor from 2^74 to 2^752020-09-27atrenchNFno factor from 2^73 to 2^742020-04-21SRBaseNFno factor from 2^72 to 2^732018-12-31Niels_Mache_NextcloudNFno factor from 2^71 to 2^722015-02-12GrunwalderGIMPNFno factor from 2^70 to 2^712015-02-09Smok_bmv NFno factor from 2^69 to 2^702014-11-17Smok_bmv NFno factor from 2^68 to 2^692013-10-25PEDNFno factor from 2^67 to 2^682013-10-12Cow_tippingNFno factor from 2^66 to 2^672012-07-31Robert FolzNFno factor from 2^65 to 2^662010-09-25vapaddyNFno factor from 2^64 to 2^652010-05-09RichardNFno factor from 2^63 to 2^64