| 5356301 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 108 / 280 |
Estimated T-Level: 21.9 ⓘ TF below 2^68 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-08-16 | Julian Sanchez | 9E9A63C015A8905D | 0 | Windows,Prime95,v16,(aka WS1) | | Factored | 2000-07-17 | Derek Wegner | 9E9A63C015A8905D | 2629151 | Windows,Prime95,v20,NT service,(aka WW5) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-10 | Ashton | 87D5FAE4D7ACE7A0 | 1 | 2478073 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-10 | Marius | CERT | Proof certified good | | 2025-03-10 | Ashton | C-PRP | M5356301/5625223788508746141613393 : 87D5FAE4D7ACE7A0 Proof Certified Good
Proof Power: 7
| | 2025-03-03 | fordobr | F-ECM | Factor: 5625223788508746141613393 / ECM curve 49, B1=50000, B2=64857975, Edwards Sigma=3213672991415120 | | 2024-04-08 | riccardo uberti | NF | no factor TF: 71-72 | | 2022-08-14 | Sid & Andy | NF-PM1 | B1=4000000, B2=10296725670 | | 2022-02-19 | mikr | NF | no factor TF: 70-71 | | 2021-10-06 | TJAOI | NF | no factor TF: 69-70 | | 2021-06-18 | Dylan Delgado | NF-PM1 | B1=520000, B2=47320000 | | 2020-09-21 | TJAOI | NF | no factor TF: 68-69 | | 2019-07-14 | USAFSS | NF-PM1 | B1=320000, B2=9520000 | | 2018-06-19 | ramgeis | NF | no factor TF: 67-68 | | 2016-08-09 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-08-18 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-12-23 | VictordeHollander | NF | no factor TF: 64-65 | | 2014-12-23 | VictordeHollander | NF | no factor TF: 63-64 | | 2010-04-18 | Squeeky_Squirrel | NF-PM1 | B1=60000, B2=1005000, E=6 | | 2009-05-23 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2000-07-17 | -anonymous- | C-LL | 9E9A63C015A8905D | | 2000-06-11 | -anonymous- | NF-PM1 | B1=20000, B2=140000 | | 1998-08-16 | -anonymous- | C-LL | 9E9A63C015A8905D | | 1998-03-17 | -anonymous- | NF | no factor TF: 1-62 |
|
