| 2447251 | Composite, with 2 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 147 / 280 |
Estimated T-Level: 22.6 ⓘ TF below 2^70 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) | 2017-10-13 | Oliver Kruse | 9360749A134990A2 | 1 | 728349 | 5 | 3 | | Factored | PRP without proof (not generated) | 2017-11-28 | storm5510 | 9360749A134990A2 | 1 | 2326933 | 5 | 3 | | Verified | Certified Good | 2023-05-22 | JacobZ | 9360749A134990A2 | 2 | 1943765 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2023-05-22 | Richard Thomas | CERT | Proof certified good | | 2023-05-22 | JacobZ | C-PRP | M2447251/122027076310400153/380554452131639231273 : 9360749A134990A2 Proof Certified Good
Proof Power: 7
| | 2023-05-22 | JacobZ | F-ECM | Factor: 380554452131639231273 / ECM curve 8, B1=50000, B2=45033450, Montgomery Sigma=4475569563193219 | | 2018-09-28 | alpertron | NF-PM1 | B1=2000000, B2=60000000, E=12 | | 2017-11-28 | storm5510 | C-PRP | M2447251/122027076310400153 : 9360749A134990A2 | | 2017-10-13 | Oliver Kruse | C-PRP | M2447251/122027076310400153 : 9360749A134990A2 |
|
