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 statusMnStatusDetails124865959Composite: proven not-prime with PRP test TFNo factors below 277TF target 277 P-1B1 = 2000000B2 = 1481448150 PRPStatusDateUserResidueShiftTypeBaseVerified2024-07-15Luke DurantE4E96632A9A474D8013 HistoryDateUserTypeResult2024-07-15George WoltmanCERTPRP CertificationCERT proof power = 9Proof certified good2024-07-15Luke DurantC-PRPE4E96632A9A474D8PRP proof power = 9PRP: VerifiedProof certified good2024-06-20Luke DurantNF-PM1B1=2000000, B2=14814481502024-05-10Naegi MakotoNFno factor from 2^70 to 2^712022-07-10TheJudgerNFno factor from 2^76 to 2^772022-07-10TheJudgerNFno factor from 2^75 to 2^762022-07-10TheJudgerNFno factor from 2^74 to 2^752021-07-08SRBaseNFno factor from 2^73 to 2^742015-10-29ANONYMOUSNFno factor from 2^72 to 2^732015-10-29ANONYMOUSNFno factor from 2^71 to 2^722015-10-27Josh FamestadNFno factor from 2^70 to 2^712015-07-02Judge HaleNFno factor from 2^69 to 2^702015-07-02Judge HaleNFno factor from 2^68 to 2^692015-07-02Judge HaleNFno factor from 2^67 to 2^682014-12-23ANONYMOUSNFno factor from 2^66 to 2^672012-09-07sasaki3NFno factor from 2^65 to 2^662010-10-30Charles A. MorrisNFno factor from 2^64 to 2^652010-05-24subgeniusNFno factor from 2^63 to 2^64