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 statusMnStatusDetails164341379Composite: proven not-prime with PRP test TFNo factors below 278TF target 278 P-1B1 = 1338000B2 = 831526410 PRPStatusDateUserResidueShiftTypeBaseVerified2024-09-08slurpee1E7D837A6A86AC535571512613Verified2025-03-21Kriesel1E7D837A6A86AC53013 HistoryDateUserTypeResult2025-03-21PoaoCERTPRP CertificationCERT proof power = 10Proof certified good2025-03-21KrieselC-PRP1E7D837A6A86AC53PRP proof power = 10PRP: VerifiedProof certified good2024-09-29ihnlNFno factor from 2^77 to 2^782024-09-29ihnlNFno factor from 2^76 to 2^772024-09-08slurpeeC-PRP1E7D837A6A86AC53PRP: VerifiedPRP without proof (not generated)2024-08-30Luke DurantNF-PM1B1=1338000, B2=8315264102019-01-25Valerio BellizzomiNFno factor from 2^75 to 2^762019-01-25Valerio BellizzomiNFno factor from 2^74 to 2^752019-01-25Valerio BellizzomiNFno factor from 2^73 to 2^742019-01-25Valerio BellizzomiNFno factor from 2^72 to 2^732019-01-25Valerio BellizzomiNFno factor from 2^71 to 2^722018-11-26Oliver KruseNFno factor from 2^70 to 2^712018-11-12proxy2222NFno factor from 2^70 to 2^712018-01-28La GüiraNFno factor from 2^69 to 2^702017-04-12XolotlNFno factor from 2^68 to 2^692016-05-25crushburnrestartNFno factor from 2^67 to 2^682015-05-21sasakiNFno factor from 2^66 to 2^672013-03-14RichardNFno factor from 2^65 to 2^662011-02-08Dalos LeeNFno factor from 2^64 to 2^652010-07-03Cedric VonckNFno factor from 2^63 to 2^64