| 3928013 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 271 TF target 264 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 152 / 280 |
Estimated T-Level: 22.7 ⓘ TF below 2^70 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-01-26 | Joel Armengaud | 8FE261EE9376F5F6 | 0 | Windows,Prime95,v15,(aka WR1) | | Factored | 2000-02-09 | Peter Werne | 8FE261EE9376F5F6 | 1956865 | Windows,Prime95,v19,NT service,(aka WV5) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-06 | fordobr | FFD61660AB26B6F3 | 1 | 282509 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-06 | riccardo uberti | CERT | Proof certified good | | 2025-03-06 | fordobr | C-PRP | M3928013/77926091862877150722601 : FFD61660AB26B6F3 Proof Certified Good
Proof Power: 7
| | 2025-03-06 | fordobr | F-ECM | Factor: 77926091862877150722601 / ECM curve 11, B1=102505, B2=211882125, Edwards Sigma=4276299656938200 | | 2024-09-09 | Joss | NF-PM1 | B1=10000000, B2=13403740350 | | 2024-01-04 | Joss | NF-PM1 | B1=2303194, B2=4842037200 | | 2021-06-03 | -anonymous- | NF | no factor TF: 70-71 | | 2021-05-19 | axn | NF-PM1 | B1=14000000, B2=700000000 | | 2021-04-23 | axn | NF | no factor TF: 69-70 | | 2020-05-29 | TJAOI | NF | no factor TF: 68-69 | | 2019-01-07 | Yxinity | NF | no factor TF: 67-68 | | 2017-06-28 | Joss | NF-PM1 | B1=380160, B2=3801600, E=6 | | 2016-12-07 | Gordon Spence | NF | no factor TF: 66-67 | | 2016-04-24 | Joss | NF-PM1 | B1=190080, B2=3113507, E=6 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2016-02-13 | 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 | | 2014-11-06 | Joss | NF-PM1 | B1=86340 | | 2012-02-10 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2011-10-01 | Squeeky_Squirrel | NF-PM1 | B1=70000, B2=1172500, E=6 | | 2011-03-01 | Grant McCracken | NF | no factor TF: 61-62 | | 2009-07-11 | Carsten Kossendey | NF-PM1 | B1=20000, B2=285000 | | 2009-01-01 | Architects Cubed | NF | no factor TF: 60-61 | | 2000-02-09 | -anonymous- | C-LL | 8FE261EE9376F5F6 | | 1999-08-16 | -anonymous- | NF | no factor TF: 1-60 | | 1998-01-26 | Joel Armengaud | C-LL | 8FE261EE9376F5F6 |
|
