| 5331797 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 63 / 280 |
Estimated T-Level: 21.1 ⓘ TF below 2^65 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-11-21 | Kevin Range | 9D337F2DF5A2D69F | 0 | Windows,Prime95,v16,(aka WS1) | | Factored | 2000-09-08 | Chris Snyder | 9D337F2DF5A2D69F | 4273778 | Windows,Prime95,v19,(aka WV1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-04 | Perig | 83F7BFA51B2AA00B | 1 | 3655021 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-04 | kkmrkkblmbrbk | CERT | Proof certified good | | 2025-03-04 | Perig | C-PRP | M5331797/21357394695143377091013847 : 83F7BFA51B2AA00B Proof Certified Good
Proof Power: 7
| | 2025-02-27 | fordobr | F-ECM | Factor: 21357394695143377091013847 / ECM curve 28, B1=50000, B2=64857975, Edwards Sigma=2110340904206501 | | 2024-07-31 | riccardo uberti | NF | no factor TF: 71-72 | | 2022-08-12 | Sid & Andy | NF-PM1 | B1=4000000, B2=10288700730 | | 2022-02-12 | mikr | NF | no factor TF: 70-71 | | 2022-01-17 | TJAOI | NF | no factor TF: 69-70 | | 2020-08-31 | TJAOI | NF | no factor TF: 68-69 | | 2019-06-24 | King | NF-PM1 | B1=1000000, B2=22500000 | | 2018-06-19 | ramgeis | NF | no factor TF: 67-68 | | 2016-08-06 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-08-16 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-12-25 | VictordeHollander | NF | no factor TF: 64-65 | | 2014-12-25 | VictordeHollander | NF | no factor TF: 63-64 | | 2010-09-15 | Squeeky_Squirrel | NF-PM1 | B1=60000, B2=990000, E=6 | | 2009-08-23 | Carsten Kossendey | NF-PM1 | B1=25000, B2=343750 | | 2009-05-27 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2000-09-08 | Chris Snyder | C-LL | 9D337F2DF5A2D69F | | 1998-11-21 | -anonymous- | C-LL | 9D337F2DF5A2D69F | | 1998-03-09 | -anonymous- | NF | no factor TF: 1-62 |
|
