| 4164437 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 265 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 95 / 280 |
Estimated T-Level: 21.7 ⓘ TF below 2^67 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Björn Wallgren | FBD2A6EBC150931D | 0 | Windows,Prime95,v14,(aka WQ1) | | Factored | 2000-04-12 | Daniel Kebert | FBD2A6EBC150931D | 3775645 | Windows,Prime95,v18,(aka WU1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-02-10 | fordobr | 6D4D696DBF85ED7C | 1 | 2235380 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-02-10 | Pappy | CERT | Proof certified good | | 2025-02-10 | fordobr | C-PRP | M4164437/744238744917951473406703 : 6D4D696DBF85ED7C Proof Certified Good
Proof Power: 7
| | 2025-02-10 | fordobr | F-ECM | Factor: 744238744917951473406703 / ECM curve 5, B1=82394, B2=117709515, Edwards Sigma=1984299270041043 | | 2024-12-13 | bayanne | NF | no factor TF: 71-72 | | 2022-12-03 | DRobinsonPE | NF-PM1 | B1=6200000, B2=33075839160 | | 2022-10-12 | Kevin_9611 | NF-PM1 | B1=420000, B2=197932020 | | 2022-05-12 | mikr | NF | no factor TF: 70-71 | | 2021-07-02 | axn | NF | no factor TF: 69-70 | | 2021-07-02 | axn | NF | no factor TF: 68-69 | | 2020-11-28 | Carlos Pinho | NF-PM1 | B1=158000, B2=4141000 | | 2018-11-29 | Yxinity | NF | no factor TF: 67-68 | | 2017-12-19 | Yxinity | NF | no factor TF: 66-67 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2015-06-04 | snme2pm1 | NF | no factor TF: 65-66 | | 2013-11-13 | David Campeau | NF | no factor TF: 64-65 | | 2013-10-08 | Jayder | NF | no factor TF: 63-64 | | 2013-08-07 | Squeeky_Squirrel | NF-PM1 | B1=125000, B2=2375000, E=6 | | 2011-08-19 | USAFSS | NF-PM1 | B1=45000, B2=630000, E=6 | | 2011-07-17 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2011-01-20 | Grant McCracken | NF | no factor TF: 61-62 | | 2009-08-03 | Carsten Kossendey | NF-PM1 | B1=25000, B2=325000 | | 2001-10-13 | David Campeau | NF | no factor TF: 1-61 | | 2000-04-12 | -anonymous- | C-LL | FBD2A6EBC150931D |
|
