| 39838709 | Composite: proven not-prime with Lucas-Lehmer test No factors below 274 TF target 272 |
| P-1 | |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Verified | 2011-02-02 | Reed_Young | 39D1BA32D466F5FB | 29546025 | Linux 64-bit,Prime95,v25.9,build 4 | | Verified | 2016-02-29 | Brian Beuning | 39D1BA32D466F5FB | 12514913 | CUDALucas v2.05.1 |
|
| History | | Date | User | Type | Result |
|---|
| 2020-01-24 | -anonymous- | NF | no factor TF: 73-74 | | 2019-10-18 | -anonymous- | NF | no factor TF: 72-73 | | 2019-06-09 | monst | NF | no factor TF: 71-72 | | 2016-02-29 | Brian Beuning | C-LL | 39D1BA32D466F5FB | | 2014-12-15 | The Mawn | NF | no factor TF: 70-71 | | 2014-12-11 | Mark Rose | NF | no factor TF: 69-70 | | 2011-03-17 | James Heinrich | NF-PM1 | B1=690000, B2=18975000, E=12 | | 2011-03-07 | James Heinrich | NF | no factor TF: 68-69 | | 2011-02-02 | Reed_Young | C-LL | 39D1BA32D466F5FB | | 2007-08-14 | EPF | NF | no factor TF: 1-68 |
|
