| 5222873 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 17 / 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 | 1999-05-23 | Philipp Hänggi | E8560F0E4BC5D255 | 4708152 | Windows,Prime95,v18,(aka WU1) | | Factored | 2000-08-17 | Kyle Evans | E8560F0E4BC5D255 | 1570185 | Windows,Prime95,v20,(aka WW1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-02-11 | cramsey87 | 059BBB7DC7F1EF87 | 1 | 1842994 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-02-11 | Maura | CERT | Proof certified good | | 2025-02-11 | cramsey87 | C-PRP | M5222873/88497632385697684798844047 : 059BBB7DC7F1EF87 Proof Certified Good
Proof Power: 7
| | 2025-02-05 | fordobr | F-ECM | Factor: 88497632385697684798844047 / ECM curve 4, B1=50000, B2=88280115, Edwards Sigma=2824206606991798 | | 2025-02-04 | Jason Lynch | NF-PM1 | B1=17371000, B2=209560240890 | | 2021-09-17 | SRBase | NF | no factor TF: 71-72 | | 2021-09-06 | axn | NF-PM1 | B1=8000000, B2=400000000 | | 2021-08-31 | SRBase | NF | no factor TF: 70-71 | | 2021-08-18 | SRBase | NF | no factor TF: 69-70 | | 2020-11-09 | TJAOI | NF | no factor TF: 68-69 | | 2018-06-17 | ramgeis | NF | no factor TF: 67-68 | | 2018-06-17 | Squeeky_Squirrel | NF-PM1 | B1=310000, B2=9222500, E=12 | | 2016-05-30 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-01-30 | Numberwang | 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 | | 2010-06-13 | Squeeky_Squirrel | NF-PM1 | B1=60000, B2=975000, E=6 | | 2009-06-14 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2000-10-07 | -anonymous- | C-LL | 1151EEC41AA62E__ | | 2000-08-17 | -anonymous- | C-LL | E8560F0E4BC5D255 | | 2000-07-25 | -anonymous- | NF-PM1 | B1=25000, B2=275000 | | 1999-05-23 | -anonymous- | C-LL | E8560F0E4BC5D255 | | 1999-03-15 | -anonymous- | C-LL | 2853630191396D__ | | 1998-06-01 | MadPoo 🙂 | NF | no factor TF: 1-62 |
|
