| 3556489 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 271 TF target 264 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 218 / 280 |
Estimated T-Level: 23.9 ⓘ TF below 2^74 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 2000-12-07 | Dave | A557933834691707 | 2153253 | Windows,Prime95,v20,(aka WW1) | | Factored | 2003-02-27 | Doug McFadyen | A557933834691707 | 0 | Windows,Prime95,v15,(aka WR1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-01-17 | fordobr | 4F41B01439E26F48 | 1 | 738635 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-01-17 | R. Forsén | CERT | Proof certified good | | 2025-01-17 | fordobr | C-PRP | M3556489/6588187252206269768105527 : 4F41B01439E26F48 Proof Certified Good
Proof Power: 7
| | 2025-01-17 | fordobr | F-ECM | Factor: 6588187252206269768105527 / ECM curve 19, B1=117562, B2=275660385, Edwards Sigma=1981793152200143 | | 2022-10-25 | Joss | NF-PM1 | B1=1000000, B2=130364850 | | 2022-07-16 | mikr | NF-PM1 | B1=6000000, B2=7731126942 | | 2022-05-12 | Joss | NF-PM1 | B1=500000, B2=130364850 | | 2021-10-18 | ArtyomP | NF-PP1 | Start=6/5, B1=50000, B2=2500000 | | 2021-10-18 | ArtyomP | NF-PP1 | Start=2/7, B1=50000, B2=2500000 | | 2021-03-17 | -anonymous- | NF | no factor TF: 70-71 | | 2021-03-17 | -anonymous- | NF | no factor TF: 69-70 | | 2021-01-25 | axn | NF | no factor TF: 68-69 | | 2019-02-11 | TJAOI | NF | no factor TF: 67-68 | | 2017-01-16 | Gordon Spence | NF | no factor TF: 66-67 | | 2017-01-04 | Joss | NF-PM1 | B1=120000 | | 2016-12-29 | Joss | NF-PM1 | B1=80000 | | 2016-12-27 | Joss | NF-PM1 | B1=20000 | | 2016-10-06 | Squeeky_Squirrel | NF-PM1 | B1=225000, B2=6525000, E=12 | | 2016-03-03 | ramgeis | NF | no factor TF: 65-66 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2015-01-30 | VictordeHollander | NF | no factor TF: 64-65 | | 2015-01-30 | VictordeHollander | NF | no factor TF: 63-64 | | 2012-06-20 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2011-06-26 | Grant McCracken | NF | no factor TF: 61-62 | | 2010-09-13 | markr | NF-PM1 | B1=100000, B2=2225000, E=6 | | 2009-03-16 | S485122 | NF | no factor TF: 60-61 | | 2003-02-27 | Doug | C-LL | A557933834691707 | | 2003-02-27 | Doug | NF | no factor TF: 1-60 | | 2000-12-07 | -anonymous- | C-LL | A557933834691707 | | 2000-11-25 | -anonymous- | NF-PM1 | B1=10000, B2=32500 | | 2000-05-10 | David Campeau | NF-PM1 | B1=15000, B2=187500 | | 1998-04-15 | -anonymous- | C-LL | A557933834691707 | | 1998-03-31 | -anonymous- | NF | no factor TF: 1-60 |
|
