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 statusMnStatusDetails138752333Composite: proven not-prime with PRP test TFNo factors below 277TF target 277 P-1B1 = 1181000B2 = 1351510710 PRPStatusDateUserResidueShiftTypeBaseVerified2025-09-06Poao6E06C48F5321077F10619885513 HistoryDateUserTypeResult2025-09-07Fabrice BelletCERTPRP CertificationCERT proof power = 10Proof certified good2025-09-06PoaoC-PRP6E06C48F5321077FPRP proof power = 10PRP: VerifiedProof certified good2024-09-21Luke DurantNF-PM1B1=1181000, B2=13515107102024-08-04RichardNFno factor from 2^76 to 2^772024-07-14SRBaseNFno factor from 2^75 to 2^762023-01-15SRBaseNFno factor from 2^74 to 2^752021-08-02SRBaseNFno factor from 2^73 to 2^742020-10-23SRBaseNFno factor from 2^72 to 2^732017-02-14workerthreadNFno factor from 2^71 to 2^722017-02-08guruNFno factor from 2^70 to 2^712017-02-08proxy2222NFno factor from 2^69 to 2^702017-02-08proxy2222NFno factor from 2^68 to 2^692016-03-02dbaughNFno factor from 2^67 to 2^682015-02-01el groccoNFno factor from 2^66 to 2^672012-11-19KoekieNFno factor from 2^65 to 2^662010-12-06RichardNFno factor from 2^64 to 2^652010-06-12Charles A. MorrisNFno factor from 2^63 to 2^64