| 31026727 | Composite: proven not-prime with Lucas-Lehmer test No factors below 273 TF target 271 |
| P-1 | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 4 / 280 |
Estimated T-Level: 20.1 ⓘ TF below 2^62 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Verified | 2006-08-25 | Tim Chaffee | A2453557C5E4D5CD | 6349044 | Windows,Prime95,v23,(aka WZ1) | | Verified | 2013-12-19 | Dubslow | A2453557C5E4D5CD | 723760 | Linux 64-bit,Prime95,v27.9,build 1 |
|
| History | | Date | User | Type | Result |
|---|
| 2022-07-24 | Sid & Andy | NF | no factor TF: 72-73 | | 2022-07-24 | Sid & Andy | NF | no factor TF: 71-72 | | 2021-09-20 | ATH | NF-PP1 | Start=2/7, B1=300000, B2=12600000 | | 2019-01-01 | ramgeis | NF | no factor TF: 70-71 | | 2013-12-19 | Dubslow | C-LL | A2453557C5E4D5CD | | 2013-04-02 | Ludovic | NF | no factor TF: 69-70 | | 2012-05-09 | bcp19 | NF | no factor TF: 68-69 | | 2006-08-25 | -anonymous- | C-LL | A2453557C5E4D5CD | | 2006-07-10 | -anonymous- | NF | no factor TF: 1-68 | | 2006-07-10 | -anonymous- | NF-PM1 | B1=310000, B2=2867500 | | 2005-09-03 | TheJudger | NF | no factor TF: 1-67 | | 2001-08-31 | Net_Force | NF | no factor TF: 1-56 |
|
