| 4286677 | Composite: proven not-prime with Lucas-Lehmer test No factors below 273 TF target 265 |
| P-1 | | B1 = | 6200000 | | B2 = | 35561477490 |
|
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 79 / 640 |
Estimated T-Level: 25.6 ⓘ TF below 2^80 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Verified | 1998-08-09 | Jörg Thomsen | 61C29EC57FDBE830 | 0 | Windows,Prime95,v16,NT service,(aka WS5) | | Verified | 2000-03-22 | Krzysztof Leszczynski | 61C29EC57FDBE830 | 358890 | Windows,Prime95,v19,(aka WV1) |
|
| History | | Date | User | Type | Result |
|---|
| 2024-11-17 | TheJudger | NF | no factor TF: 72-73 | | 2024-11-17 | TheJudger | NF | no factor TF: 71-72 | | 2022-06-30 | DRobinsonPE | NF-PM1 | B1=6200000, B2=35561477490 | | 2021-01-24 | -anonymous- | NF | no factor TF: 70-71 | | 2021-01-23 | -anonymous- | NF | no factor TF: 69-70 | | 2021-01-23 | -anonymous- | NF | no factor TF: 68-69 | | 2018-11-17 | chuenkit | NF | no factor TF: 67-68 | | 2018-04-26 | chuenkit | NF | no factor TF: 66-67 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2016-02-10 | Squeeky_Squirrel | NF-PM1 | B1=150000, B2=3600000, E=6 | | 2015-06-13 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-08-15 | -anonymous- | NF-PM1 | B1=64973 | | 2014-05-28 | lycorn | NF | no factor TF: 64-65 | | 2014-05-05 | Jayder | NF | no factor TF: 63-64 | | 2012-02-03 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2011-09-02 | Squeeky_Squirrel | NF-PM1 | B1=50000, B2=775000, E=6 | | 2010-12-23 | markr | NF | no factor TF: 61-62 | | 2009-08-10 | Carsten Kossendey | NF-PM1 | B1=25000, B2=337500 | | 2000-03-22 | -anonymous- | C-LL | 61C29EC57FDBE830 | | 1998-08-09 | Phantomas | C-LL | 61C29EC57FDBE830 | | 1998-07-05 | Phantomas | NF | no factor TF: 1-61 | | 1998-03-23 | -anonymous- | NF | no factor TF: 1-60 |
|
