| 2441561 | Composite, with 3 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 159 / 280 |
Estimated T-Level: 22.8 ⓘ TF below 2^71 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 | 6E459D92BA1B64F2 | 2 | 1744975 | 5 | 3 | | Factored | PRP without proof (not generated) | 2017-11-27 | storm5510 | 6E459D92BA1B64F2 | 2 | 1981362 | 5 | 3 | | Verified | Certified Good | 2025-09-01 | feather | 6E459D92BA1B64F2 | 3 | 2409285 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-09-01 | ANONYMOUS | CERT | Proof certified good | | 2025-09-01 | feather | C-PRP | M2441561/190441759/249039223/8758554789882320702175671 : 6E459D92BA1B64F2 Proof Certified Good
Proof Power: 7
| | 2025-09-01 | feather | F-ECM | Factor: 8758554789882320702175671 / ECM curve 1, B1=85675, B2=12970230, Edwards Sigma=5472734377898068 | | 2018-09-28 | alpertron | NF-PM1 | B1=2000000, B2=60000000, E=12 | | 2017-11-27 | storm5510 | C-PRP | M2441561/190441759/249039223 : 6E459D92BA1B64F2 | | 2017-10-13 | Oliver Kruse | C-PRP | M2441561/190441759/249039223 : 6E459D92BA1B64F2 | | 2008-07-14 | George Woltman | F-ECM | Factor: 249039223 |
|
