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 statusMnStatusDetails332213083Composite: proven not-prime with PRP test TFNo factors below 281TF target 281 P-1B1 = 2125000B2 = 511390950 PRPStatusDateUserResidueShiftTypeBaseVerified2022-11-07Simon Josefsson127F090DAF9C735A7699435013 HistoryDateUserTypeResult2023-10-18James HeinrichNFno factor from 2^67 to 2^682023-10-04James HeinrichNFno factor from 2^75 to 2^762023-03-05Mark RoseNFno factor from 2^80 to 2^812022-12-13Jan S.CERTPRP CertificationCERT proof power = 7Proof certified good2022-11-07Simon JosefssonC-PRP127F090DAF9C735APRP proof power = 7PRP: VerifiedProof certified good2022-09-09Simon JosefssonNF-PM1B1=2125000, B2=5113909502019-12-06MadPooNF-PM1B1=100000, B2=10000002019-04-01MadPooNF-PM1B1=100000, B2=1500002015-10-25Bruno VictalNFno factor from 2^79 to 2^802015-10-25Bruno VictalNFno factor from 2^78 to 2^792015-10-24Bruno VictalNFno factor from 2^77 to 2^782015-09-12Grant McCrackenNFno factor from 2^76 to 2^772009-02-26rmoyes2000NFno factor from 2^74 to 2^752009-02-23rmoyes2000NFno factor from 2^73 to 2^742009-02-20rmoyes2000NFno factor from 2^72 to 2^732009-02-19rmoyes2000NFno factor from 2^71 to 2^722009-02-18rmoyes2000NFno factor from 2^70 to 2^712009-02-18rmoyes2000NFno factor from 2^69 to 2^702009-01-15Team_InspectorNFno factor from 2^68 to 2^69