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 statusMnStatusDetails158267281Composite: 1 known prime factor FactoredFactorDigitsBitsDate688411529366859145307772375.92024-08-26 10:42:25 HistoryDateUserTypeResult2025-06-05GregFFactor: 68841152936685914530777 / TF: 75-762024-08-26SRBaseFFactor: 68841152936685914530777 / TF: 75-76*2024-06-01James HeinrichNFno factor from 2^71 to 2^722023-02-26SRBaseNFno factor from 2^74 to 2^752021-11-20SRBaseNFno factor from 2^73 to 2^742016-10-14arnaudNFno factor from 2^72 to 2^732016-10-14ConductorNFno factor from 2^71 to 2^722016-08-23neocppNFno factor from 2^70 to 2^712016-08-11neocppNFno factor from 2^69 to 2^702016-07-27Adam BuranNFno factor from 2^68 to 2^692016-05-13RDbrvnNFno factor from 2^67 to 2^682015-04-30RichardNFno factor from 2^66 to 2^672013-02-14Charles A. MorrisNFno factor from 2^65 to 2^662011-01-29oodairaNFno factor from 2^64 to 2^652010-06-27Charles A. MorrisNFno factor from 2^63 to 2^64