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 statusMnStatusDetails139028657Composite: proven not-prime with PRP test TFNo factors below 277TF target 277 P-1B1 = 820000B2 = 58913910 PRPStatusDateUserResidueShiftTypeBaseVerified2025-01-08curtisc52179EDC62E4A1AA2504067513 HistoryDateUserTypeResult2025-01-08ChrisCallahanCERTPRP CertificationCERT proof power = 8Proof certified good2025-01-08curtiscC-PRP52179EDC62E4A1AAPRP proof power = 8PRP: VerifiedProof certified good2024-08-26Brent GoebelNFno factor from 2^76 to 2^772024-07-19SRBaseNFno factor from 2^75 to 2^762024-07-07tscNF-PM1B1=820000, B2=589139102023-01-15SRBaseNFno factor from 2^74 to 2^752021-08-03SRBaseNFno factor from 2^73 to 2^742020-10-23SRBaseNFno factor from 2^72 to 2^732016-08-20Dennis SchreiberNFno factor from 2^71 to 2^722016-08-19arnaudNFno factor from 2^70 to 2^712016-08-19Dennis SchreiberNFno factor from 2^69 to 2^702016-08-18AnrodionNFno factor from 2^68 to 2^692016-08-12proxy2222NFno factor from 2^67 to 2^682015-02-08firereddNFno factor from 2^66 to 2^672012-11-21KoekieNFno factor from 2^65 to 2^662010-12-06RichardNFno factor from 2^64 to 2^652010-06-13sasaki3NFno factor from 2^63 to 2^64