| 5178973 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 10 / 280 |
Estimated T-Level: 20.2 ⓘ TF below 2^62 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Stephen Wood | 5EADCE252B46C8F1 | 0 | Linux 32-bit,Prime95,v14,(aka WQ2) | | Factored | 2000-07-03 | Roger Yerdon | 5EADCE252B46C8F1 | 1342335 | Windows,Prime95,v19,(aka WV1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-01-28 | feather | 573AE9F006B01BE2 | 1 | 2137563 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-01-28 | Henry_Huang_142857 | CERT | Proof certified good | | 2025-01-28 | feather | C-PRP | M5178973/883436988743481008885791 : 573AE9F006B01BE2 Proof Certified Good
Proof Power: 7
| | 2025-01-21 | fordobr | F-ECM | Factor: 883436988743481008885791 / ECM curve 1, B1=50000, B2=64857975, Edwards Sigma=3100516916536617 | | 2024-10-03 | onlinegame | NF | no factor TF: 71-72 | | 2022-07-01 | Sid & Andy | NF-PM1 | B1=4000000, B2=10296725670 | | 2022-01-29 | mikr | NF | no factor TF: 70-71 | | 2021-11-10 | TJAOI | NF | no factor TF: 69-70 | | 2020-10-26 | TJAOI | NF | no factor TF: 68-69 | | 2018-06-20 | ramgeis | NF | no factor TF: 67-68 | | 2017-12-23 | Squeeky_Squirrel | NF-PM1 | B1=310000, B2=9222500, E=12 | | 2016-06-07 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-08-09 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-12-19 | VictordeHollander | NF | no factor TF: 64-65 | | 2014-12-19 | VictordeHollander | NF | no factor TF: 63-64 | | 2009-10-06 | USAFSS | NF-PM1 | B1=60000, B2=975000, E=6 | | 2009-08-23 | Carsten Kossendey | NF-PM1 | B1=25000, B2=325000 | | 2009-06-24 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2002-09-14 | David Campeau | NF | no factor TF: 1-62 | | 2000-07-03 | -anonymous- | C-LL | 5EADCE252B46C8F1 |
|
