| 3782447 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 271 TF target 264 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 268 / 280 |
Estimated T-Level: 24.8 ⓘ TF below 2^77 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | chadd williams | F3E09F2CEAF94828 | 0 | Windows,Prime95,v14,(aka WQ1) | | Factored | 1999-08-22 | Alan Lund | F3E09F2CEAF94828 | 491493 | Windows,Prime95,v17,(aka WT1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-17 | Andrey Dobrynin | 0925D5599616EDF1 | 1 | 1813967 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-17 | johnguin | CERT | Proof certified good | | 2025-03-17 | Andrey Dobrynin | C-PRP | Proof Certified Good
Proof Power: 7
| | 2025-03-17 | Andrey Dobrynin | F-ECM | Factor: 34537983930703827317662903 / ECM curve 30, B1=115132, B2=275660385, Edwards Sigma=2896461764092650 | | 2025-02-27 | Joss | NF-PM1 | B1=20000000, B2=10027887870 | | 2025-01-17 | TJAOI | NF | no factor TF: 70-71 | | 2023-01-27 | mikr | NF-PM1 | B1=8000000, B2=11215115142 | | 2022-10-25 | Joss | NF-PM1 | B1=1000000, B2=130364850 | | 2021-04-05 | axn | NF | no factor TF: 69-70 | | 2020-12-03 | axn | NF | no factor TF: 68-69 | | 2018-11-19 | TJAOI | NF | no factor TF: 67-68 | | 2016-11-11 | Gordon Spence | NF | no factor TF: 66-67 | | 2016-03-30 | mikr | NF-PM1 | B1=1600000, B2=66000000, E=12 | | 2016-03-01 | ramgeis | NF | no factor TF: 65-66 | | 2016-02-23 | Mark Rose | NF | no factor TF: 1-60 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2015-01-27 | VictordeHollander | NF | no factor TF: 64-65 | | 2015-01-27 | VictordeHollander | NF | no factor TF: 63-64 | | 2012-04-16 | Squeeky_Squirrel | NF-PM1 | B1=110000, B2=2062500, E=6 | | 2012-03-23 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2011-04-15 | markr | NF | no factor TF: 61-62 | | 2009-07-14 | Carsten Kossendey | NF-PM1 | B1=20000, B2=265000 | | 2009-03-01 | S485122 | NF | no factor TF: 60-61 | | 1999-08-22 | -anonymous- | C-LL | F3E09F2CEAF94828 |
|
