| 3903937 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 271 TF target 264 |
| 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 | 1998-01-21 | Rodney Lynch | 5A94007728C20DED | 0 | Windows,Prime95,v15,(aka WR1) | | Factored | 1999-10-21 | The Prime Hunters | 5A94007728C20DED | 3049431 | Windows,Prime95,v18,(aka WU1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-01-08 | fordobr | 9508878EA4FE5F80 | 1 | 1103773 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-01-08 | LookAS | CERT | Proof certified good | | 2025-01-08 | fordobr | C-PRP | M3903937/2811199764305150950685089 : 9508878EA4FE5F80 Proof Certified Good
Proof Power: 7
| | 2025-01-08 | fordobr | F-ECM | Factor: 2811199764305150950685089 / ECM curve 1, B1=92308, B2=275660385, Edwards Sigma=4035138327454529 | | 2024-05-02 | Joss | NF-PM1 | B1=10000000, B2=13603800210 | | 2023-12-08 | Joss | NF-PM1 | B1=2308865, B2=2389066680 | | 2023-09-05 | Joss | NF-PM1 | B1=1000000, B2=1520328810 | | 2021-06-08 | -anonymous- | NF | no factor TF: 70-71 | | 2021-06-07 | axn | NF-PM1 | B1=14000000, B2=700000000 | | 2021-04-14 | axn | NF | no factor TF: 69-70 | | 2020-09-07 | TJAOI | NF | no factor TF: 68-69 | | 2019-01-18 | Yxinity | NF | no factor TF: 67-68 | | 2016-11-30 | Gordon Spence | NF | no factor TF: 66-67 | | 2016-04-08 | Joss | NF-PM1 | B1=250905, B2=4516290, E=6 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2016-02-23 | Mark Rose | NF | no factor TF: 60-61 | | 2016-02-14 | caddr | NF | no factor TF: 65-66 | | 2015-01-11 | VictordeHollander | NF | no factor TF: 64-65 | | 2015-01-11 | VictordeHollander | NF | no factor TF: 63-64 | | 2014-11-01 | Joss | NF-PM1 | B1=86441 | | 2012-02-10 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2011-10-08 | Squeeky_Squirrel | NF-PM1 | B1=70000, B2=1172500, E=6 | | 2011-02-07 | Grant McCracken | NF | no factor TF: 61-62 | | 2009-07-09 | Carsten Kossendey | NF-PM1 | B1=20000, B2=285000 | | 1999-10-21 | -anonymous- | C-LL | 5A94007728C20DED | | 1998-01-21 | -anonymous- | C-LL | 5A94007728C20DED | | 1997-11-11 | -anonymous- | NF | no factor TF: 1-60 |
|
