| 2881031 | Composite, with 3 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 130 / 280 |
Estimated T-Level: 22.3 ⓘ TF below 2^69 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) | 2017-10-23 | Oliver Kruse | 4FF4F2699971297D | 2 | 1227239 | 5 | 3 | | Factored | PRP without proof (not generated) | 2017-12-08 | kkmrkkblmbrbk | 4FF4F2699971297D | 2 | 929921 | 5 | 3 | | Verified | Certified Good | 2025-01-08 | Dmitry Bolshakov | 4FF4F2699971297D | 3 | 1079995 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-01-09 | tactus tenebris | CERT | Proof certified good | | 2025-01-08 | Dmitry Bolshakov | C-PRP | M2881031/74906807/121003303/22466592738350163421591 : 4FF4F2699971297D Proof Certified Good
Proof Power: 7
| | 2025-01-04 | Dmitry Bolshakov | F-ECM | Factor: 22466592738350163421591 / ECM curve 73, B1=50000, B2=38914785, Edwards Sigma=8074960068217176 | | 2022-11-27 | USAFSS | NF-PM1 | B1=255000, B2=196319970 | | 2017-12-08 | kkmrkkblmbrbk | C-PRP | M2881031/74906807/121003303 : 4FF4F2699971297D | | 2017-10-23 | Oliver Kruse | C-PRP | M2881031/74906807/121003303 : 4FF4F2699971297D | | 2008-09-07 | Will Edgington | F | Factor: 121003303 |
|
