| 5352203 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 94 / 280 |
Estimated T-Level: 21.7 ⓘ TF below 2^67 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1999-07-12 | Wu Xiao | 56622531F08D87B9 | 0 | Windows,Prime95,v16,(aka WS1) | | Factored | 2000-07-25 | Zanitti Gianni | 56622531F08D87B9 | 3656634 | Windows,Prime95,v18,(aka WU1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-07 | Oliver Kruse | 94C067210315D8A5 | 1 | 2905314 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-07 | ohne-makler | CERT | Proof certified good | | 2025-03-07 | Oliver Kruse | C-PRP | Proof Certified Good
Proof Power: 7
| | 2025-03-02 | Andrey Dobrynin | F-ECM | Factor: 1068120553432746716157459647 / ECM curve 44, B1=50000, B2=64857975, Edwards Sigma=8445347591635435 | | 2024-05-14 | riccardo uberti | NF | no factor TF: 71-72 | | 2022-08-10 | Sid & Andy | NF-PM1 | B1=4000000, B2=10285831710 | | 2022-02-17 | mikr | NF | no factor TF: 70-71 | | 2021-12-09 | TJAOI | NF | no factor TF: 69-70 | | 2021-06-19 | Dylan Delgado | NF-PM1 | B1=520000, B2=47320000 | | 2020-09-21 | TJAOI | NF | no factor TF: 68-69 | | 2019-06-10 | USAFSS | NF-PM1 | B1=320000, B2=10160000 | | 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 | | 2010-09-21 | Squeeky_Squirrel | NF-PM1 | B1=60000, B2=960000, E=6 | | 2009-08-22 | Carsten Kossendey | NF-PM1 | B1=25000, B2=343750 | | 2009-05-23 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2001-01-21 | -anonymous- | C-LL | 56622531F08D87B9 | | 2000-11-15 | -anonymous- | C-LL | 56622531F08D87B9 | | 2000-07-25 | -anonymous- | C-LL | 56622531F08D87B9 | | 1999-07-12 | -anonymous- | C-LL | 56622531F08D87B9 | | 1998-03-17 | -anonymous- | NF | no factor TF: 1-62 |
|
