| 4338847 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 273 TF target 265 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 82 / 280 |
Estimated T-Level: 21.5 ⓘ TF below 2^66 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-03-03 | Joel Armengaud | 3D12D1852EEB554B | 0 | Windows,Prime95,v15,(aka WR1) | | Factored | 1999-12-08 | Chuck Wolber | 3D12D1852EEB554B | 2351995 | Windows,Prime95,v19,(aka WV1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-02-15 | Andrey Dobrynin | 30972A630FBB99D0 | 1 | 1282993 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-02-15 | Flavio Afonso Trancoso | CERT | Proof certified good | | 2025-02-15 | Andrey Dobrynin | C-PRP | Proof Certified Good
Proof Power: 7
| | 2025-02-15 | Andrey Dobrynin | F-ECM | Factor: 14569762936856398288817 / ECM curve 5, B1=73178, B2=117709515, Edwards Sigma=2862369843208067 | | 2022-12-02 | DRobinsonPE | NF-PM1 | B1=6200000, B2=28433170920 | | 2021-02-10 | -anonymous- | NF | no factor TF: 72-73 | | 2021-01-30 | -anonymous- | NF | no factor TF: 71-72 | | 2021-01-30 | -anonymous- | NF | no factor TF: 70-71 | | 2021-01-26 | -anonymous- | NF | no factor TF: 69-70 | | 2021-01-26 | -anonymous- | NF | no factor TF: 68-69 | | 2018-10-26 | chuenkit | NF | no factor TF: 67-68 | | 2018-04-30 | chuenkit | NF | no factor TF: 66-67 | | 2018-02-23 | Ismo Laitela | NF-PM1 | B1=2098905, B2=65066057, E=12 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2015-06-16 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-06-13 | lycorn | NF | no factor TF: 64-65 | | 2014-06-12 | Jayder | NF | no factor TF: 63-64 | | 2012-01-14 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2011-12-20 | Squeeky_Squirrel | NF-PM1 | B1=110000, B2=2227500, E=6 | | 2010-11-29 | markr | NF | no factor TF: 61-62 | | 2009-08-10 | Carsten Kossendey | NF-PM1 | B1=25000, B2=356250 | | 2001-09-30 | David Campeau | NF | no factor TF: 1-61 | | 1999-12-08 | -anonymous- | C-LL | 3D12D1852EEB554B | | 1998-03-03 | Joel Armengaud | C-LL | 3D12D1852EEB554B | | 1998-02-08 | -anonymous- | NF | no factor TF: 1-60 |
|
