| 5031821 | Composite, with 2 known prime factors. Cofactor is composite. Trial Factored to 270 TF target 265 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 3 / 280 |
Estimated T-Level: 20.1 ⓘ TF below 2^62 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 | PRP without proof (not generated) | 2017-11-21 | storm5510 | DB65666309DCB5CC | 2 | 1206439 | 5 | 3 | | Verified | PRP without proof (not generated) | 2018-01-16 | kkmrkkblmbrbk | DB65666309DCB5CC | 2 | 435950 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-02-26 | Sid & Andy | NF-PM1 | B1=5500000, B2=7576560810 | | 2025-01-06 | Sid & Andy | NF | no factor TF: 68-70 | | 2023-05-11 | This -Anonymous- | NF-PM1 | B1=50000, B2=1000000 | | 2018-01-16 | kkmrkkblmbrbk | C-PRP | M5031821/755568177719/2246301658521767599 : DB65666309DCB5CC | | 2017-11-21 | storm5510 | C-PRP | M5031821/755568177719/2246301658521767599 : DB65666309DCB5CC | | 2016-03-18 | TJAOI | F | Factor: 2246301658521767599 |
|
