| 27986041 | Composite: proven not-prime with Lucas-Lehmer test No factors below 273 TF target 270 |
| P-1 | | B1 = | 1386000 | | B2 = | 1809965430 |
|
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Verified | 2005-07-17 | Christopher Ng | A60363A480485304 | 20139896 | Windows,Prime95,v23,(aka WZ1) | | Verified | 2011-07-29 | Reed_Young | A60363A480485304 | 26070030 | Linux 64-bit,Prime95,v25.9,build 4 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-09-24 | Jason Lynch | NF-PM1 | B1=1386000, B2=1809965430 | | 2021-06-03 | Sid & Andy | NF | no factor TF: 72-73 | | 2021-06-03 | Sid & Andy | NF | no factor TF: 71-72 | | 2021-04-07 | mikr | NF | no factor TF: 70-71 | | 2017-12-16 | Yxinity | NF | no factor TF: 69-70 | | 2017-12-16 | Yxinity | NF | no factor TF: 68-69 | | 2011-07-29 | Reed_Young | C-LL | A60363A480485304 | | 2011-05-09 | kdgehman | NF | no factor TF: 67-68 | | 2005-07-17 | -anonymous- | C-LL | A60363A480485304 | | 2005-06-19 | -anonymous- | NF-PM1 | B1=435000 | | 2005-02-23 | -anonymous- | NF | no factor TF: 1-67 | | 2004-09-16 | -anonymous- | NF | no factor TF: 1-62 | | 2004-09-02 | -anonymous- | NF | no factor TF: 1-62 | | 2001-08-24 | Net_Force | NF | no factor TF: 1-56 |
|
