| 5487913 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 16 / 280 |
Estimated T-Level: 20.3 ⓘ TF below 2^62 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-10-29 | Paul Shimmin | A1E54B605BDBEA4B | 0 | Windows,Prime95,v17,(aka WT1) | | Factored | 2000-08-10 | Stephen Wood | A1E54B605BDBEA4B | 2702679 | Linux 32-bit,Prime95,v20,(aka WW2) | | Factored | 2015-05-01 | MadPoo 🙂 | A1E54B605BDBEA4B | 772023 | Windows 64-bit,Prime95,v26,(aka We4) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-30 | Ashton | E7A3A52BC6FFCF28 | 1 | 5369641 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-04-01 | BadWolve | CERT | Proof certified good | | 2025-03-30 | Ashton | C-PRP | M5487913/25703775442308316333993 : E7A3A52BC6FFCF28 Proof Certified Good
Proof Power: 7
| | 2025-03-23 | fordobr | F-ECM | Factor: 25703775442308316333993 / ECM curve 4, B1=50000, B2=64857975, Edwards Sigma=2905192419994333 | | 2022-07-09 | Sid & Andy | NF-PM1 | B1=5000000, B2=6421800462 | | 2021-09-19 | SRBase | NF | no factor TF: 71-72 | | 2021-08-23 | SRBase | NF | no factor TF: 70-71 | | 2021-08-18 | SRBase | NF | no factor TF: 69-70 | | 2020-08-24 | TJAOI | NF | no factor TF: 68-69 | | 2020-06-01 | King | NF-PM1 | B1=1000000, B2=22500000 | | 2018-06-29 | ramgeis | NF | no factor TF: 67-68 | | 2016-07-08 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-08-25 | snme2pm1 | NF | no factor TF: 65-66 | | 2015-05-01 | MadPoo 🙂 | C-LL | A1E54B605BDBEA4B | | 2014-11-23 | lycorn | NF | no factor TF: 64-65 | | 2014-11-23 | lycorn | NF | no factor TF: 63-64 | | 2010-04-27 | Squeeky_Squirrel | NF-PM1 | B1=60000, B2=1035000, E=6 | | 2009-05-03 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2000-08-10 | Stephen Wood | C-LL | A1E54B605BDBEA4B | | 2000-07-12 | Stephen Wood | NF-PM1 | B1=20000, B2=20000 | | 1998-10-29 | -anonymous- | C-LL | A1E54B605BDBEA4B | | 1998-04-27 | -anonymous- | NF | no factor TF: 1-62 | | 1998-04-11 | -anonymous- | NF | no factor TF: 1-62 |
|
