| 5249537 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 51 / 280 |
Estimated T-Level: 20.9 ⓘ TF below 2^64 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Bad | | Adam Atkinson | 6DAEF4114B5C69B8 | 0 | Windows,Prime95,v16,(aka WS1) | | Factored | 2000-08-24 | Kent Tan | B38F36DEA403F193 | 5176797 | Linux 32-bit,Prime95,v20,(aka WW2) | | Factored | 2001-06-17 | James Jonkman | B38F36DEA403F193 | 617636 | Windows,Prime95,v20,(aka WW1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-02-25 | Perig | E4B7933283DB4EA1 | 1 | 4269797 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-02-25 | Rainchill | CERT | Proof certified good | | 2025-02-25 | Perig | C-PRP | M5249537/6057850502790182661339569 : E4B7933283DB4EA1 Proof Certified Good
Proof Power: 7
| | 2025-02-08 | Ruslan Borisov | F-ECM | Factor: 6057850502790182661339569 / ECM curve 25, B1=50000, B2=35542122, Edwards Sigma=1971373853708277 | | 2021-09-20 | axn | NF-PM1 | B1=8000000, B2=400000000 | | 2021-09-17 | SRBase | NF | no factor TF: 71-72 | | 2021-09-01 | SRBase | NF | no factor TF: 70-71 | | 2021-08-18 | SRBase | NF | no factor TF: 69-70 | | 2020-09-21 | TJAOI | NF | no factor TF: 68-69 | | 2019-03-27 | USAFSS | NF-PM1 | B1=315000, B2=9213750 | | 2018-06-17 | ramgeis | NF | no factor TF: 67-68 | | 2016-06-03 | Gordon Spence | NF | no factor TF: 66-67 | | 2016-02-23 | Mark Rose | NF | no factor TF: 1-62 | | 2015-08-12 | 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 | | 2010-07-09 | Squeeky_Squirrel | NF-PM1 | B1=60000, B2=975000, E=6 | | 2009-06-09 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2001-06-17 | -anonymous- | C-LL | B38F36DEA403F193 | | 2001-05-20 | -anonymous- | NF-PM1 | B1=20000, B2=190000 | | 2000-08-24 | -anonymous- | C-LL | B38F36DEA403F193 | | 2000-08-01 | -anonymous- | NF-PM1 | B1=25000, B2=275000 |
|
