| 4375051 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 273 TF target 265 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 138 / 280 |
Estimated T-Level: 22.5 ⓘ TF below 2^70 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-04-05 | Tom Hogland | B82152E0C3D5A68C | 0 | Windows,Prime95,v15,(aka WR1) | | Factored | 2000-02-09 | Alex_Alaniz | B82152E0C3D5A68C | 332329 | Windows,Prime95,v19,(aka WV1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-02-03 | Andrey Dobrynin | 01CA014CEC5687B5 | 1 | 3627329 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-02-03 | Nickson Queiroz | CERT | Proof certified good | | 2025-02-03 | Andrey Dobrynin | C-PRP | Proof Certified Good
Proof Power: 7
| | 2025-02-03 | Andrey Dobrynin | F-ECM | Factor: 920027607729354689794679 / ECM curve 27, B1=68333, B2=117709515, Edwards Sigma=6850719278881399 | | 2022-12-20 | DRobinsonPE | NF-PM1 | B1=6200000, B2=32756371830 | | 2021-02-11 | -anonymous- | NF | no factor TF: 72-73 | | 2021-01-30 | -anonymous- | NF | no factor TF: 71-72 | | 2021-01-30 | -anonymous- | NF | no factor TF: 70-71 | | 2021-01-25 | -anonymous- | NF | no factor TF: 69-70 | | 2021-01-25 | -anonymous- | NF | no factor TF: 68-69 | | 2018-10-29 | chuenkit | NF | no factor TF: 67-68 | | 2018-10-22 | Ismo Laitela | NF-PM1 | B1=2189464, B2=63494458, E=12 | | 2018-05-03 | chuenkit | NF | no factor TF: 66-67 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2015-06-19 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-07-14 | lycorn | NF | no factor TF: 64-65 | | 2014-07-14 | Jayder | NF | no factor TF: 63-64 | | 2012-02-29 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2012-01-05 | Squeeky_Squirrel | NF-PM1 | B1=110000, B2=2255000, E=6 | | 2010-11-12 | markr | NF | no factor TF: 61-62 | | 2009-08-10 | Carsten Kossendey | NF-PM1 | B1=25000, B2=356250 | | 2002-02-03 | David Campeau | NF | no factor TF: 1-61 | | 2000-02-09 | Alex Alaniz | C-LL | B82152E0C3D5A68C | | 1998-04-05 | -anonymous- | C-LL | B82152E0C3D5A68C |
|
