| 2481971 | Composite, with 3 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 121 / 280 |
Estimated T-Level: 22.2 ⓘ TF below 2^69 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) | 2017-10-14 | Oliver Kruse | D26BCD32EE65D360 | 3 | 72553 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-11-29 | storm5510 | D26BCD32EE65D360 | 3 | 1117879 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2023-03-19 | Denial140 | NF-PM1 | B1=1000000, B2=6543255810 | | 2022-08-18 | USAFSS | NF-PM1 | B1=224000, B2=203668920 | | 2017-11-29 | storm5510 | C-PRP | M2481971/4963943/19855769/5777797812860740817 : D26BCD32EE65D360 | | 2017-10-14 | Oliver Kruse | C-PRP | M2481971/4963943/19855769/5777797812860740817 : D26BCD32EE65D360 | | 2016-07-26 | TJAOI | F | Factor: 5777797812860740817 | | 2008-07-14 | George Woltman | F-ECM | Factor: 19855769 |
|
