| 4268689 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 273 TF target 265 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 134 / 280 |
Estimated T-Level: 22.4 ⓘ TF below 2^69 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-07-21 | Marcin Kowalczyk | EC7BBEF2627315D1 | 0 | Linux 32-bit,Prime95,v16,(aka WS2) | | Factored | 2000-05-17 | Carl Mikkelsen | EC7BBEF2627315D1 | 4139495 | Windows,Prime95,v18,NT service,(aka WU5) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-02-23 | fordobr | 0FC57B4176D14EC4 | 1 | 1856703 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-02-23 | Ryan Propper | CERT | Proof certified good | | 2025-02-23 | fordobr | C-PRP | M4268689/2284934164788926391667867033 : 0FC57B4176D14EC4 Proof Certified Good
Proof Power: 7
| | 2025-02-23 | fordobr | F-ECM | Factor: 2284934164788926391667867033 / ECM curve 19, B1=78717, B2=117709515, Edwards Sigma=1795886801816669 | | 2024-11-17 | TheJudger | NF | no factor TF: 72-73 | | 2024-11-17 | TheJudger | NF | no factor TF: 71-72 | | 2022-06-06 | DRobinsonPE | NF-PM1 | B1=6200000, B2=26528321820 | | 2021-01-24 | -anonymous- | NF | no factor TF: 70-71 | | 2021-01-22 | -anonymous- | NF | no factor TF: 69-70 | | 2021-01-22 | -anonymous- | NF | no factor TF: 68-69 | | 2018-11-15 | chuenkit | NF | no factor TF: 67-68 | | 2018-04-25 | chuenkit | NF | no factor TF: 66-67 | | 2016-02-04 | Squeeky_Squirrel | NF-PM1 | B1=150000, B2=3600000, E=6 | | 2015-06-12 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-11-22 | Joss | NF-PM1 | B1=80072 | | 2014-08-11 | -anonymous- | NF-PM1 | B1=65036 | | 2014-01-03 | lycorn | NF | no factor TF: 64-65 | | 2014-01-02 | Jayder | NF | no factor TF: 63-64 | | 2012-01-31 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2011-08-30 | Squeeky_Squirrel | NF-PM1 | B1=50000, B2=762500, E=6 | | 2011-01-01 | markr | NF | no factor TF: 61-62 | | 2009-08-03 | Carsten Kossendey | NF-PM1 | B1=25000, B2=337500 | | 2000-05-17 | foxkid | C-LL | EC7BBEF2627315D1 | | 1998-07-21 | -anonymous- | C-LL | EC7BBEF2627315D1 | | 1998-06-14 | -anonymous- | NF | no factor TF: 1-61 | | 1998-03-31 | -anonymous- | NF | no factor TF: 1-60 |
|
