| 2440489 | Composite, with 2 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 63 / 640 |
Estimated T-Level: 25.5 ⓘ TF below 2^80 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) | 2017-10-13 | Oliver Kruse | 4D6DA115A99AFA11 | 2 | 1499887 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-11-27 | storm5510 | 4D6DA115A99AFA11 | 2 | 386235 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2018-09-28 | alpertron | NF-PM1 | B1=2000000, B2=60000000, E=12 | | 2017-11-27 | storm5510 | C-PRP | M2440489/26630615969/1954475377607 : 4D6DA115A99AFA11 | | 2017-10-13 | Oliver Kruse | C-PRP | M2440489/26630615969/1954475377607 : 4D6DA115A99AFA11 | | 2008-07-14 | George Woltman | F-ECM | Factor: 1954475377607 |
|
