| 7203293 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 269 TF target 267 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 6 / 280 |
Estimated T-Level: 20.1 ⓘ TF below 2^62 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1999-10-15 | PaySys International | 2F68F0072590C357 | 0 | Windows,Prime95,v16,(aka WS1) | | Factored | 2003-08-08 | Hendrik Grondijs | 2F68F0072590C357 | 5461284 | Windows,Prime95,v20,(aka WW1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2020-05-01 | riccardo uberti | 8A7FBE5CDAEFEC8C | 1 | 2417063 | 5 | 3 | | Verified | PRP without proof (not generated) | 2020-05-04 | arnaud | 8A7FBE5CDAEFEC8C | 1 | 4876450 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2020-05-04 | arnaud | C-PRP | M7203293/425694944524607994001 : 8A7FBE5CDAEFEC8C | | 2020-05-01 | riccardo uberti | C-PRP | M7203293/425694944524607994001 : 8A7FBE5CDAEFEC8C | | 2020-05-01 | TJAOI | F | Factor: 425694944524607994001 / TF: 68-69 | | 2018-07-22 | ramgeis | NF | no factor TF: 67-68 | | 2016-10-10 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-06-12 | VictordeHollander | NF | no factor TF: 65-66 | | 2013-11-14 | David Campeau | NF | no factor TF: 64-65 | | 2013-11-03 | Nesowa | NF | no factor TF: 63-64 | | 2012-01-14 | Carsten Kossendey | NF-PM1 | B1=455000, B2=13991250, E=12 | | 2003-08-08 | -anonymous- | C-LL | 2F68F0072590C357 | | 2001-12-08 | -anonymous- | NF-PM1 | B1=35000, B2=35000 | | 2001-12-01 | -anonymous- | NF | no factor TF: 1-63 | | 1999-10-15 | -anonymous- | C-LL | 2F68F0072590C357 | | 1999-08-07 | Mike Curtis | NF | no factor TF: 1-62 | | 1998-11-21 | Mike Curtis | NF | no factor TF: 1-62 |
|
