| 5286683 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 16 / 280 |
Estimated T-Level: 20.3 ⓘ TF below 2^62 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-07-29 | Gary Hanson | 235A7679AD6D6C48 | 0 | Windows,Prime95,v16,(aka WS1) | | Factored | 2000-08-10 | Michael B. Clark | 235A7679AD6D6C48 | 3314370 | Windows,Prime95,v19,(aka WV1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-02-24 | Peter_Jakub | 6EB57F9650D1A279 | 1 | 2280825 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-02-24 | DanMB | CERT | Proof certified good | | 2025-02-24 | Peter_Jakub | C-PRP | M5286683/213592965011379422418167 : 6EB57F9650D1A279 Proof Certified Good
Proof Power: 7
| | 2025-02-17 | fordobr | F-ECM | Factor: 213592965011379422418167 / ECM curve 4, B1=50000, B2=64857975, Edwards Sigma=7944720953601761 | | 2021-10-13 | axn | NF-PM1 | B1=8000000, B2=400000000 | | 2021-09-25 | SRBase | NF | no factor TF: 71-72 | | 2021-08-31 | SRBase | NF | no factor TF: 70-71 | | 2021-08-18 | SRBase | NF | no factor TF: 69-70 | | 2020-10-05 | TJAOI | NF | no factor TF: 68-69 | | 2019-07-03 | USAFSS | NF-PM1 | B1=315000, B2=9371250 | | 2018-06-17 | ramgeis | NF | no factor TF: 67-68 | | 2016-06-07 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-08-14 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-12-22 | VictordeHollander | NF | no factor TF: 64-65 | | 2014-12-22 | VictordeHollander | NF | no factor TF: 63-64 | | 2010-07-22 | Squeeky_Squirrel | NF-PM1 | B1=60000, B2=975000, E=6 | | 2009-08-23 | Carsten Kossendey | NF-PM1 | B1=25000, B2=343750 | | 2009-06-04 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2000-08-10 | planetmike | C-LL | 235A7679AD6D6C48 | | 1998-07-29 | garyh | C-LL | 235A7679AD6D6C48 | | 1998-06-01 | MadPoo 🙂 | NF | no factor TF: 1-62 |
|
