| 81191939 | Composite: proven not-prime with Lucas-Lehmer test No factors below 275 TF target 275 |
| P-1 | |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Verified | 2018-02-24 | Chris Tew | 413FFC78E2D2F514 | 29493412 | Windows 64-bit,Prime95,v27.7,build 2 | | Verified | 2026-07-09 | wigglefruit | 413FFC78E2D2F514 | 0 | Linux64,prpll,v0.15-355-g7b6b2c1 |
|
| History | | Date | User | Type | Result |
|---|
| 2026-07-09 | wigglefruit | C-LL | 413FFC78E2D2F514 | | 2018-02-24 | Chris Tew | C-LL | 413FFC78E2D2F514 | | 2017-05-19 | S485122 | NF-PM1 | B1=690000, B2=14145000, E=12 | | 2016-09-24 | -anonymous- | NF | no factor TF: 74-75 | | 2016-09-23 | -anonymous- | NF | no factor TF: 73-74 | | 2016-09-23 | -anonymous- | NF | no factor TF: 72-73 | | 2016-09-23 | -anonymous- | NF | no factor TF: 71-72 | | 2013-07-15 | SMoffat | NF | no factor TF: 70-71 | | 2013-04-04 | ANONYMOUS | NF | no factor TF: 69-70 | | 2013-03-18 | ANONYMOUS | NF | no factor TF: 68-69 | | 2013-02-02 | sylvap | NF | no factor TF: 67-68 | | 2013-01-26 | Bold_Seeker | NF | no factor TF: 66-67 | | 2012-04-05 | c10ck3r | NF | no factor TF: 65-66 | | 2010-12-12 | Architects Cubed | NF | no factor TF: 64-65 |
|
