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 statusMnStatusDetails137576177Composite: proven not-prime with PRP test TFNo factors below 277TF target 277 P-1B1 = 760000B2 = 60025290 PRPStatusDateUserResidueShiftTypeBaseVerified2025-06-200xDC55605793B1E60D013 HistoryDateUserTypeResult2025-06-20George WoltmanCERTPRP CertificationCERT proof power = 9Proof certified good2025-06-200xC-PRPDC55605793B1E60DPRP proof power = 9PRP: VerifiedProof certified good2024-09-18oodairaNF-PM1B1=760000, B2=600252902024-08-19JurzalNFno factor from 2^76 to 2^772024-08-15OliverBleenNFno factor from 2^75 to 2^762023-01-12SRBaseNFno factor from 2^74 to 2^752021-07-31SRBaseNFno factor from 2^73 to 2^742020-10-23SRBaseNFno factor from 2^72 to 2^732016-11-25-Anonymous-NFno factor from 2^71 to 2^722016-05-27DerekNFno factor from 2^70 to 2^712016-05-27DerekNFno factor from 2^69 to 2^702016-03-25dbaughNFno factor from 2^68 to 2^692016-02-27dbaughNFno factor from 2^67 to 2^682015-02-04-Anonymous-NFno factor from 2^66 to 2^672012-11-13sasaki3NFno factor from 2^65 to 2^662011-02-05UngelovendeNFno factor from 2^64 to 2^652010-06-11carlos56NFno factor from 2^63 to 2^64