| 81611749 | Composite: proven not-prime with Lucas-Lehmer test No factors below 276 TF target 275 |
| P-1 | | B1 = | 1500000 | | B2 = | 55000000 |
|
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Bad | 2017-06-18 | bradmtl | ABAAF5A4607E44A2 | 43448461 | Windows 64-bit,Prime95,v28.7,build 1 | | Verified | 2018-09-21 | ATH | E32F3478A86407C5 | 13598 | CUDALucas v2.06beta | | Verified | 2019-04-24 | endless_mike | E32F3478A86407C5 | 7200055 | Linux 64-bit,Prime95,v29.4,build 8 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-11-08 | Kyle Askine | NF | no factor TF: 75-76 | | 2019-04-24 | endless_mike | C-LL | E32F3478A86407C5 | | 2018-09-28 | Dylan Delgado | NF-PM1 | B1=1500000, B2=55000000, E=6 | | 2018-09-21 | ATH | C-LL | E32F3478A86407C5 | | 2017-06-18 | bradmtl | C-LL | ABAAF5A4607E44A2 | | 2017-05-14 | TheJudger | NF-PM1 | B1=695000, B2=14247500, E=12 | | 2016-11-06 | TheJudger | NF | no factor TF: 74-75 | | 2016-11-06 | TheJudger | NF | no factor TF: 73-74 | | 2016-09-27 | Bdot | NF | no factor TF: 72-73 | | 2016-09-27 | Bdot | NF | no factor TF: 71-72 | | 2013-11-03 | SMoffat | NF | no factor TF: 70-71 | | 2011-03-14 | Per Jessen | NF | no factor TF: 69-70 | | 2011-03-09 | plandon | NF | no factor TF: 68-69 | | 2011-03-08 | eon_blue_apocalypse | NF | no factor TF: 67-68 | | 2011-03-04 | ITS | NF | no factor TF: 66-67 | | 2011-03-01 | Scout | NF | no factor TF: 65-66 | | 2010-12-13 | Architects Cubed | NF | no factor TF: 64-65 |
|
