| 2809759 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 270 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 210 / 280 |
Estimated T-Level: 23.8 ⓘ TF below 2^74 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | David M. Smith | D8B2C688835A98C0 | 0 | Linux 32-bit,Prime95,v14,(aka WQ2) | | Factored | 1999-05-09 | Gordon M. Spence | D8B2C688835A98C0 | 2045068 | Windows,Prime95,v18,NT service,(aka WU5) | | Factored | 2018-09-03 | kkmrkkblmbrbk | D8B2C688835A98C0 | 1214199 | Windows 64-bit,Prime95,v29.4,build 5 |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-01 | fordobr | 41E129EEF95B723F | 1 | 1909662 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-01 | ChrisKim | CERT | Proof certified good | | 2025-03-01 | fordobr | C-PRP | M2809759/4904132536992788354474321 : 41E129EEF95B723F Proof Certified Good
Proof Power: 7
| | 2025-03-01 | fordobr | F-ECM | Factor: 4904132536992788354474321 / ECM curve 3, B1=172391, B2=551335785, Edwards Sigma=5069375401150065 | | 2024-02-02 | Joss | NF-PM1 | B1=26334930, B2=26403477870 | | 2024-02-02 | Joss | NF-PM1 | B1=5266986, B2=10740365790 | | 2023-10-22 | Joss | NF-PM1 | B1=2633494, B2=2873961090 | | 2023-10-22 | Joss | NF-PM1 | B1=2633494, B2=1246214970 | | 2023-10-21 | Joss | NF-PM1 | B1=2633494, B2=432341910 | | 2023-09-21 | Joss | NF-PM1 | B1=1000000, B2=6450381630 | | 2023-06-05 | Joss | NF-PM1 | B1=1000000, B2=3145642500 | | 2023-02-01 | Joss | NF-PM1 | B1=1000000, B2=432341910 | | 2023-01-04 | Architects Cubed | NF | no factor TF: 69-70 | | 2021-05-31 | TJAOI | NF | no factor TF: 68-69 | | 2020-01-11 | masser | NF-PM1 | B1=5000000, B2=200000000, E=12 | | 2019-10-30 | BigBrother | NF-PM1 | B1=3000000, B2=90000000 | | 2018-12-30 | chuenkit | NF | no factor TF: 67-68 | | 2018-09-03 | kkmrkkblmbrbk | C-LL | D8B2C688835A98C0 | | 2017-10-24 | Gordon Spence | NF | no factor TF: 66-67 | | 2017-04-22 | Joss | NF-PM1 | B1=360000, B2=3600000, E=6 | | 2016-12-26 | Joss | NF-PM1 | B1=207360 | | 2016-12-24 | Joss | NF-PM1 | B1=172800 | | 2016-12-23 | Joss | NF-PM1 | B1=144000 | | 2016-02-23 | Mark Rose | NF | no factor TF: 1-60 | | 2016-02-11 | ramgeis | NF | no factor TF: 65-66 | | 2015-04-21 | VictordeHollander | NF | no factor TF: 64-65 | | 2015-04-21 | VictordeHollander | NF | no factor TF: 63-64 | | 2013-01-10 | dbaugh | NF | no factor TF: 62-63 | | 2012-01-11 | Squeeky_Squirrel | NF-PM1 | B1=180000, B2=4050000, E=6 | | 2011-12-08 | lycorn | NF | no factor TF: 61-62 | | 2011-01-24 | Joss | NF-PM1 | B1=50000 | | 2009-02-14 | Sturle Sunde | NF | no factor TF: 60-61 | | 2004-01-07 | markr | NF-PM1 | B1=35000, B2=656250 | | 2003-11-28 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 1999-05-09 | Gordon Spence | C-LL | D8B2C688835A98C0 |
|
