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 statusMnStatusDetails137984051Composite: proven not-prime with PRP test TFNo factors below 277TF target 277 P-1B1 = 1172000B2 = 1210825980 PRPStatusDateUserResidueShiftTypeBaseVerified2025-05-09Mihai PredaF01ECC67C5BB55C1013 HistoryDateUserTypeResult2025-05-09Georg_EdelmannCERTPRP CertificationCERT proof power = 10Proof certified good2025-05-09Mihai PredaC-PRPF01ECC67C5BB55C1PRP proof power = 10PRP: VerifiedProof certified good2024-09-19EthanDNF-PM1B1=1172000, B2=12108259802024-07-28TheJudgerNFno factor from 2^76 to 2^772024-07-12SRBaseNFno factor from 2^75 to 2^762024-05-06GregNFno factor from 2^69 to 2^702023-01-12SRBaseNFno factor from 2^74 to 2^752021-08-02SRBaseNFno factor from 2^73 to 2^742020-10-27SRBaseNFno factor from 2^72 to 2^732016-04-15Mihai PredaNFno factor from 2^71 to 2^722016-04-07Mihai PredaNFno factor from 2^70 to 2^712016-04-02Josh FamestadNFno factor from 2^69 to 2^702016-04-01Choi4KANGNFno factor from 2^68 to 2^692016-03-02dbaughNFno factor from 2^67 to 2^682015-02-06firereddNFno factor from 2^66 to 2^672012-11-20RichardNFno factor from 2^65 to 2^662010-12-02Torchwood InstituteNFno factor from 2^64 to 2^652010-06-11Charles A. MorrisNFno factor from 2^63 to 2^64