| 2328251 | Composite, with 4 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 262 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 115 / 640 |
Estimated T-Level: 25.9 ⓘ TF below 2^81 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) | 2017-10-11 | Oliver Kruse | 186D350EE999A941 | 1 | 0 | 1 | 3 | | Verified | PRP without proof (not generated) | 2017-10-18 | Oliver Kruse | 63AB8A1A737E08A6 | 4 | 1340228 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-11-23 | storm5510 | 63AB8A1A737E08A6 | 4 | 186263 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2021-04-19 | ViliamF | NF-PM1 | B1=5000000, B2=500000000 | | 2018-03-05 | alpertron | NF-PM1 | B1=500000, B2=15000000, E=12 | | 2017-11-23 | storm5510 | C-PRP | M2328251/4656503/1513363151/55617259889/3476392353753199 : 63AB8A1A737E08A6 | | 2017-10-18 | Oliver Kruse | C-PRP | M2328251/4656503/1513363151/55617259889/3476392353753199 : 63AB8A1A737E08A6 | | 2017-10-11 | Oliver Kruse | C-PRP | M2328251/known_factors : 186D350EE999A941 | | 2014-07-06 | TJAOI | F | Factor: 3476392353753199 | | 2008-07-14 | George Woltman | F-ECM | Factor: 55617259889 | | 2008-07-14 | George Woltman | F-ECM | Factor: 1513363151 |
|
