| 8081 | Composite, with 5 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 244 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 640 / 640 | | 35 | 1000000 | 1566 / 1566 | | 40 | 3000000 | 4588 / 4588 | | 45 | 11000000 | 9201 / 9201 | | 50 | 44000000 | 9454 / 16550 |
Estimated T-Level: 47.9 ⓘ TF below 2^154 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 |
|---|
| Verified | No proof (small exponent) | 2017-09-21 | Oliver Kruse | 7023AB48E1D93BF5 | 5 | 0 | 1 | 3 | | Verified | No proof (small exponent) | 2017-10-02 | kkmrkkblmbrbk | 7023AB48E1D93BF5 | 5 | 0 | 1 | 3 | | Verified | No proof (small exponent) | 2017-12-07 | ATH | 7023AB48E1D93BF5 | 5 | 3079 | 1 | 3 | | Verified | No proof (small exponent) | 2020-04-17 | Oliver Kruse | 154003DB2731B826 | 5 | 3290 | 5 | 3 | | Verified | No proof (small exponent) | 2024-07-01 | kkmrkkblmbrbk | 154003DB2731B826 | 5 | 6878 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-05-26 | masser | NF-PP1 | Start=97/37, B1=1300000000, B2=1298700000000 | | 2024-07-01 | kkmrkkblmbrbk | C-PRP | M8081/1343743045821830104657/272050792367/3498814409/36263568311/56994371767 : 154003DB2731B826 | | 2023-05-27 | JacobZ | NF-PM1 | B1=73000000000, B2=299074993103236350 | | 2021-08-27 | Seth_Tr | NF-PM1 | B1=400000000 | | 2021-08-27 | Seth_Tr | NF-PM1 | B1=100000000 | | 2020-04-17 | Oliver Kruse | C-PRP | M8081/3498814409/36263568311/56994371767/272050792367/1343743045821830104657 : 154003DB2731B826 | | 2017-12-07 | ATH | C-PRP | M8081/3498814409/36263568311/56994371767/272050792367/1343743045821830104657 : 7023AB48E1D93BF5 | | 2017-10-02 | kkmrkkblmbrbk | C-PRP | M8081/3498814409/36263568311/56994371767/272050792367/1343743045821830104657 : 7023AB48E1D93BF5 | | 2017-09-21 | Oliver Kruse | C-PRP | M8081/known_factors : 7023AB48E1D93BF5 |
|
