| 2617807 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 182 / 280 |
Estimated T-Level: 23.3 ⓘ TF below 2^72 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Morris Thompson | 7402C97D49C49A90 | 0 | OS/2,Prime95,v13,Michel van Loon port,(aka M2) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2017-10-17 | Oliver Kruse | 414574146C410194 | 1 | 141846 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-12-02 | storm5510 | 414574146C410194 | 1 | 1898186 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2019-07-04 | alpertron | NF-PM1 | B1=2000000, B2=60000000, E=12 | | 2017-12-02 | storm5510 | C-PRP | M2617807/409953389891574583 : 414574146C410194 | | 2017-10-17 | Oliver Kruse | C-PRP | M2617807/409953389891574583 : 414574146C410194 | | 1999-03-26 | Stephen Wood | F | Factor: 409953389891574583 |
|
