| 5282677 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 83 / 280 |
Estimated T-Level: 21.5 ⓘ TF below 2^66 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1999-06-26 | Gerhard H Wrodnigg | 47425E932E1D276E | 4941384 | Linux 32-bit,Prime95,v18,(aka WU2) | | Factored | 2001-09-10 | Gerhard H Wrodnigg | 47425E932E1D276E | 2647793 | Linux 32-bit,Prime95,v19,(aka WV2) | | Factored | 2002-12-25 | S57483 | 47425E932E1D276E | 2811237 | Linux 32-bit,Prime95,v22,(aka WY2) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-02-22 | jeriffee | 5660B1F9011B9F5F | 1 | 2217053 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-02-22 | stenlei | CERT | Proof certified good | | 2025-02-22 | jeriffee | C-PRP | M5282677/638307386858989452334341751 : 5660B1F9011B9F5F Proof Certified Good
Proof Power: 7
| | 2025-02-16 | fordobr | F-ECM | Factor: 638307386858989452334341751 / ECM curve 38, B1=50000, B2=64857975, Edwards Sigma=3169140579225904 | | 2021-10-11 | SRBase | NF | no factor TF: 71-72 | | 2021-10-10 | axn | NF-PM1 | B1=8000000, B2=400000000 | | 2021-08-24 | SRBase | NF | no factor TF: 70-71 | | 2021-08-18 | SRBase | NF | no factor TF: 69-70 | | 2020-10-12 | TJAOI | NF | no factor TF: 68-69 | | 2019-07-01 | USAFSS | NF-PM1 | B1=315000, B2=9292500 | | 2018-06-17 | ramgeis | NF | no factor TF: 67-68 | | 2016-06-07 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-02-01 | 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 | | 2009-06-04 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2002-12-25 | -anonymous- | C-LL | 47425E932E1D276E | | 2002-11-24 | -anonymous- | NF-PM1 | B1=65000, B2=991250 | | 2001-09-10 | Michael Hanscho | C-LL | 47425E932E1D276E | | 1999-11-04 | Michael Hanscho | C-LL | 47425E932E1D276E | | 1999-06-26 | Michael Hanscho | C-LL | 47425E932E1D276E | | 1998-06-01 | -anonymous- | NF | no factor TF: 1-62 | | 1998-03-09 | -anonymous- | NF | no factor TF: 1-61 |
|
