| 7811281 | Composite, with 2 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 267 |
| Factored | |
| P-1 factors | |
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Factored | PRP without proof (not generated) | 2018-05-14 | storm5510 | 959EDFC0E6877070 | 1 | 6045159 | 5 | 3 | | Factored | PRP without proof (not generated) | 2019-10-11 | kkmrkkblmbrbk | 959EDFC0E6877070 | 1 | 6820584 | 5 | 3 | | Verified | Certified Good | 2024-02-06 | ANONYMOUS | 959EDFC0E6877070 | 2 | 2849631 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-05-08 | Stef42 | NF-PM1 | B1=2050000, B2=2616049800 | | 2024-02-06 | MCAT-MFC | CERT | Proof certified good | | 2024-02-06 | ANONYMOUS | C-PRP | M7811281/319926804937498279/922528603061509547249 : 959EDFC0E6877070 Proof Certified Good
Proof Power: 8
| | 2024-01-31 | Stef42 | F-PM1 | Factor: 922528603061509547249 / B1=843000 | | 2019-10-11 | kkmrkkblmbrbk | C-PRP | M7811281/319926804937498279 : 959EDFC0E6877070 | | 2018-05-14 | storm5510 | C-PRP | M7811281/319926804937498279 : 959EDFC0E6877070 | | 1998-08-09 | -anonymous- | F | Factor: 319926804937498279 |
|
