| 3738617 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 271 TF target 264 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 231 / 280 |
Estimated T-Level: 24.1 ⓘ TF below 2^75 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-01-13 | Joel Armengaud | AF6348FDE530BDA9 | 0 | Windows,Prime95,v15,(aka WR1) | | Factored | 1999-10-15 | Chionh Wei Peng | AF6348FDE530BDA9 | 1672043 | Windows,Prime95,v18,(aka WU1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-26 | Andrey Dobrynin | D8B86F235A682037 | 1 | 553457 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-26 | Wojciech Florek | CERT | Proof certified good | | 2025-03-26 | Andrey Dobrynin | C-PRP | Proof Certified Good
Proof Power: 7
| | 2025-03-26 | Andrey Dobrynin | F-ECM | Factor: 1996466136582527308464863 / ECM curve 20, B1=120772, B2=367552185, Edwards Sigma=3144155353322651 | | 2024-11-28 | TJAOI | NF | no factor TF: 70-71 | | 2023-05-31 | Sid & Andy | NF-PM1 | B1=7200000, B2=14697446610 | | 2023-02-13 | Joss | NF-PM1 | B1=1000000, B2=461556480 | | 2022-10-25 | Joss | NF-PM1 | B1=1000000, B2=130364850 | | 2021-03-17 | axn | NF | no factor TF: 69-70 | | 2020-12-11 | axn | NF | no factor TF: 68-69 | | 2018-08-20 | TJAOI | NF | no factor TF: 67-68 | | 2016-11-05 | Gordon Spence | NF | no factor TF: 66-67 | | 2016-02-25 | ramgeis | NF | no factor TF: 65-66 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2015-10-27 | mikr | NF-PM1 | B1=1600000, B2=66000000, E=12 | | 2015-01-23 | VictordeHollander | NF | no factor TF: 64-65 | | 2015-01-23 | VictordeHollander | NF | no factor TF: 63-64 | | 2013-02-09 | Squeeky_Squirrel | NF-PM1 | B1=85000, B2=1445000, E=6 | | 2012-05-10 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2011-05-09 | Grant McCracken | NF | no factor TF: 61-62 | | 2009-07-06 | Carsten Kossendey | NF-PM1 | B1=20000, B2=265000 | | 2009-03-05 | S485122 | NF | no factor TF: 60-61 | | 1999-10-15 | -anonymous- | C-LL | AF6348FDE530BDA9 | | 1998-01-13 | Joel Armengaud | C-LL | AF6348FDE530BDA9 | | 1997-12-30 | -anonymous- | NF | no factor TF: 1-60 |
|
