| 2946257 | Composite, with 2 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 75 / 280 |
Estimated T-Level: 21.3 ⓘ TF below 2^66 is very unlikely to find new factors due to ECM effort. |
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Factored | PRP without proof (not generated) | 2017-10-25 | Oliver Kruse | BCF9F19C7A2D8F37 | 1 | 2325218 | 5 | 3 | | Factored | PRP without proof (not generated) | 2017-12-09 | kkmrkkblmbrbk | BCF9F19C7A2D8F37 | 1 | 559953 | 5 | 3 | | Verified | Certified Good | 2025-02-07 | Perig | BCF9F19C7A2D8F37 | 2 | 224398 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-02-07 | Massimo Cappelli (ik5pwa) | CERT | Proof certified good | | 2025-02-07 | Perig | C-PRP | M2946257/220727681927/9721883874838281890071 : BCF9F19C7A2D8F37 Proof Certified Good
Proof Power: 7
| | 2025-02-02 | Dmitry Bolshakov | F-ECM | Factor: 9721883874838281890071 / ECM curve 74, B1=50000, B2=4700000, Edwards Sigma=3575985062378371 | | 2023-02-10 | USAFSS | NF-PM1 | B1=360000, B2=282695490 | | 2017-12-09 | kkmrkkblmbrbk | C-PRP | M2946257/220727681927 : BCF9F19C7A2D8F37 | | 2017-10-25 | Oliver Kruse | C-PRP | M2946257/220727681927 : BCF9F19C7A2D8F37 |
|
