| 2606281 | Composite, with 3 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 85 / 280 |
Estimated T-Level: 21.5 ⓘ TF below 2^66 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) | 2017-10-15 | Oliver Kruse | A0299771C49F4280 | 3 | 1449391 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-12-02 | storm5510 | A0299771C49F4280 | 3 | 1726563 | 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 | M2606281/187652233/1052598707471/60334227340340729 : A0299771C49F4280 | | 2017-10-15 | Oliver Kruse | C-PRP | M2606281/187652233/1052598707471/60334227340340729 : A0299771C49F4280 | | 2015-02-11 | TJAOI | F | Factor: 60334227340340729 | | 2008-07-14 | George Woltman | F-ECM | Factor: 1052598707471 |
|
