| 5354213 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 14 / 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 | 1998-07-11 | Dug Elson | 9FA65BC6E1BF13EF | 0 | Windows,Prime95,v16,(aka WS1) | | Factored | 2000-08-31 | Gianpaolo Petrocchi | 9FA65BC6E1BF13EF | 4145512 | Windows,Prime95,v20,(aka WW1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-10 | kutens | 529A00578317FA4C | 1 | 970176 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-10 | Ahasver Wanderer | CERT | Proof certified good | | 2025-03-10 | kutens | C-PRP | M5354213/5875730672330327900863 : 529A00578317FA4C Proof Certified Good
Proof Power: 7
| | 2025-03-02 | fordobr | F-ECM | Factor: 5875730672330327900863 / ECM curve 3, B1=50000, B2=60054225, Edwards Sigma=2303027209440903 | | 2024-04-19 | Sid & Andy | NF | no factor TF: 71-72 | | 2022-08-11 | Sid & Andy | NF-PM1 | B1=4000000, B2=10285831710 | | 2022-02-18 | mikr | NF | no factor TF: 70-71 | | 2021-11-10 | TJAOI | NF | no factor TF: 69-70 | | 2021-06-18 | Dylan Delgado | NF-PM1 | B1=520000, B2=47320000 | | 2020-09-21 | TJAOI | NF | no factor TF: 68-69 | | 2019-07-14 | USAFSS | NF-PM1 | B1=320000, B2=9520000 | | 2018-06-19 | ramgeis | NF | no factor TF: 67-68 | | 2016-08-09 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-08-18 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-12-23 | VictordeHollander | NF | no factor TF: 64-65 | | 2014-12-23 | VictordeHollander | NF | no factor TF: 63-64 | | 2010-04-17 | Squeeky_Squirrel | NF-PM1 | B1=60000, B2=1005000, E=6 | | 2009-05-23 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2000-08-31 | -anonymous- | C-LL | 9FA65BC6E1BF13EF | | 2000-06-11 | -anonymous- | NF-PM1 | B1=20000, B2=140000 | | 1998-07-11 | -anonymous- | C-LL | 9FA65BC6E1BF13EF | | 1998-06-14 | -anonymous- | NF | no factor TF: 1-62 |
|
