| 5156497 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 265 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 73 / 280 |
Estimated T-Level: 21.3 ⓘ TF below 2^66 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-10-18 | Christian Laurent-Lund | 7893CE19E383014F | 0 | Windows,Prime95,v16,(aka WS1) | | Factored | 2001-04-01 | Tom Mossberg | 7893CE19E383014F | 730451 | Windows,Prime95,v19,(aka WV1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-01-16 | mrh | 6BE031B1F1FA152D | 1 | 2248661 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-01-17 | Greg | CERT | Proof certified good | | 2025-01-16 | mrh | C-PRP | M5156497/832997166073459589170271 : 6BE031B1F1FA152D Proof Certified Good
Proof Power: 7
| | 2025-01-10 | fordobr | F-ECM | Factor: 832997166073459589170271 / ECM curve 33, B1=50000, B2=64857975, Edwards Sigma=1990397945665385 | | 2024-10-19 | Andrew B | NF | no factor TF: 71-72 | | 2022-07-04 | Sid & Andy | NF-PM1 | B1=4000000, B2=9110873310 | | 2022-01-23 | mikr | NF | no factor TF: 70-71 | | 2021-11-18 | TJAOI | NF | no factor TF: 69-70 | | 2020-11-30 | TJAOI | NF | no factor TF: 68-69 | | 2018-06-20 | ramgeis | NF | no factor TF: 67-68 | | 2016-11-20 | Squeeky_Squirrel | NF-PM1 | B1=310000, B2=9687500, E=12 | | 2016-06-01 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-08-07 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-12-17 | VictordeHollander | NF | no factor TF: 64-65 | | 2014-12-17 | VictordeHollander | NF | no factor TF: 63-64 | | 2009-09-28 | USAFSS | NF-PM1 | B1=55000, B2=935000, E=6 | | 2009-06-24 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2008-10-11 | Sturle Sunde | NF | no factor TF: 61-62 | | 2001-04-01 | twmoss | C-LL | 7893CE19E383014F | | 1998-10-18 | -anonymous- | C-LL | 7893CE19E383014F | | 1998-08-02 | -anonymous- | NF | no factor TF: 1-61 |
|
