| 3911291 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 271 TF target 264 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 161 / 280 |
Estimated T-Level: 22.9 ⓘ TF below 2^71 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-03-23 | Guido Stolz | 2E502BFBC46708D8 | 0 | Windows,Prime95,v15,(aka WR1) | | Factored | 1999-10-07 | Chad Davis | 2E502BFBC46708D8 | 3168082 | Windows,Prime95,v18,(aka WU1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-15 | fordobr | 340E5F32E02D5961 | 1 | 2286802 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-15 | stenlei | CERT | Proof certified good | | 2025-03-15 | fordobr | C-PRP | M3911291/4456326980845714494343 : 340E5F32E02D5961 Proof Certified Good
Proof Power: 7
| | 2025-03-15 | fordobr | F-ECM | Factor: 4456326980845714494343 / ECM curve 12, B1=106336, B2=211882125, Edwards Sigma=1488223346428118 | | 2024-08-08 | Joss | NF-PM1 | B1=10000000, B2=13603800210 | | 2024-01-06 | Joss | NF-PM1 | B1=2307128, B2=9747978240 | | 2022-09-13 | Joss | NF-PM1 | B1=1000000, B2=130364850 | | 2021-06-13 | axn | NF-PM1 | B1=14000000, B2=700000000 | | 2021-06-09 | -anonymous- | NF | no factor TF: 70-71 | | 2021-04-17 | axn | NF | no factor TF: 69-70 | | 2020-11-24 | Carlos Pinho | NF-PM1 | B1=172000, B2=4761000 | | 2020-06-12 | TJAOI | NF | no factor TF: 68-69 | | 2019-01-18 | Yxinity | NF | no factor TF: 67-68 | | 2016-12-03 | Gordon Spence | NF | no factor TF: 66-67 | | 2016-03-01 | Joss | NF-PM1 | B1=228096, B2=2280960, E=6 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2016-02-11 | ramgeis | NF | no factor TF: 65-66 | | 2015-01-14 | VictordeHollander | NF | no factor TF: 64-65 | | 2015-01-14 | VictordeHollander | NF | no factor TF: 63-64 | | 2014-11-03 | Joss | NF-PM1 | B1=86410 | | 2012-02-10 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2011-10-05 | Squeeky_Squirrel | NF-PM1 | B1=70000, B2=1172500, E=6 | | 2011-02-14 | Grant McCracken | NF | no factor TF: 61-62 | | 2009-07-09 | Carsten Kossendey | NF-PM1 | B1=20000, B2=285000 | | 2008-12-30 | Architects Cubed | NF | no factor TF: 60-61 | | 1999-10-07 | -anonymous- | C-LL | 2E502BFBC46708D8 | | 1998-06-28 | -anonymous- | C-LL | 2E502BFBC46708D8 | | 1998-03-23 | -anonymous- | C-LL | 2E502BFBC46708D8 | | 1997-11-11 | -anonymous- | NF | no factor TF: 1-60 |
|
