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 statusMnStatusDetails142316081Composite: proven not-prime with PRP test TFNo factors below 277TF target 277 P-1B1 = 1229000B2 = 1426759950 PRPStatusDateUserResidueShiftTypeBaseVerified2025-08-16curtisc1188AA3836EF32AA12565715713 HistoryDateUserTypeResult2025-08-16Fabrice BelletCERTPRP CertificationCERT proof power = 8Proof certified good2025-08-16curtiscC-PRP1188AA3836EF32AAPRP proof power = 8PRP: VerifiedProof certified good2024-10-04Luke DurantNF-PM1B1=1229000, B2=14267599502024-09-26infinigonNFno factor from 2^76 to 2^772024-07-16SRBaseNFno factor from 2^75 to 2^762023-01-29SRBaseNFno factor from 2^74 to 2^752021-11-06SRBaseNFno factor from 2^73 to 2^742020-10-27SRBaseNFno factor from 2^72 to 2^732016-07-28Mihai PredaNFno factor from 2^71 to 2^722016-07-02Mihai PredaNFno factor from 2^70 to 2^712016-06-12Mihai PredaNFno factor from 2^69 to 2^702016-06-05Choi4KANGNFno factor from 2^68 to 2^692016-03-25dbaughNFno factor from 2^67 to 2^682015-02-23aurashiftNFno factor from 2^66 to 2^672012-12-18RichardNFno factor from 2^65 to 2^662010-12-16sasaki3NFno factor from 2^64 to 2^652010-06-16Torchwood InstituteNFno factor from 2^63 to 2^64