| 2562667 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 184 / 280 |
Estimated T-Level: 23.3 ⓘ TF below 2^72 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Frank Hornung | EF3C5C66FC70D7C4 | 0 | Windows,Prime95,v13,(aka WP1) | | Factored | 1999-03-26 | Martijn Otto | EF3C5C66FC70D7C4 | 68120 | Windows,Prime95,v17,(aka WT1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2017-10-15 | Oliver Kruse | 1C3D14D24CF448E8 | 1 | 2362746 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-12-01 | storm5510 | 1C3D14D24CF448E8 | 1 | 2164069 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2022-08-28 | USAFSS | NF-PM1 | B1=480000, B2=446264910 | | 2017-12-01 | storm5510 | C-PRP | M2562667/673373617809602657 : 1C3D14D24CF448E8 | | 2017-10-15 | Oliver Kruse | C-PRP | M2562667/673373617809602657 : 1C3D14D24CF448E8 | | 2003-11-08 | Team Prime Rib | F | Factor: 673373617809602657 | | 2003-10-23 | -anonymous- | F | Factor: 673373617809602657 | | 1999-03-26 | Martijn Otto | NF | no factor TF: 1-59 | | 1999-03-26 | Martijn Otto | C-LL | EF3C5C66FC70D7C4 |
|
