| 81543971 | Composite: proven not-prime with Lucas-Lehmer test No factors below 275 TF target 275 |
| P-1 | | B1 = | 1500000 | | B2 = | 55000000 |
|
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Bad | 2017-07-04 | -anonymous- | 36225230773D1923 | 63984501 | Windows 64-bit,Prime95,v28.10,build 1 | | Verified | 2018-09-26 | ATH | 3A8BF53302386A7B | 40785912 | CUDALucas v2.06beta | | Verified | 2019-04-24 | endless_mike | 3A8BF53302386A7B | 4343414 | Linux 64-bit,Prime95,v29.4,build 8 |
|
| History | | Date | User | Type | Result |
|---|
| 2019-04-24 | endless_mike | C-LL | 3A8BF53302386A7B | | 2018-09-29 | Dylan Delgado | NF-PM1 | B1=1500000, B2=55000000, E=6 | | 2018-09-26 | ATH | C-LL | 3A8BF53302386A7B | | 2017-07-04 | -anonymous- | C-LL | 36225230773D1923 | | 2016-10-30 | TheJudger | NF-PM1 | B1=695000, B2=14247500, E=12 | | 2016-10-27 | -anonymous- | NF | no factor TF: 74-75 | | 2016-10-27 | -anonymous- | NF | no factor TF: 73-74 | | 2016-10-27 | -anonymous- | NF | no factor TF: 72-73 | | 2016-10-27 | -anonymous- | NF | no factor TF: 71-72 | | 2014-08-11 | -anonymous- | NF | no factor TF: 70-71 | | 2013-02-13 | Per Jessen | NF | no factor TF: 69-70 | | 2013-02-05 | Markucsb | NF | no factor TF: 68-69 | | 2013-02-04 | Jan Kolomaznik | NF | no factor TF: 67-68 | | 2013-01-30 | phoenicis | NF | no factor TF: 66-67 | | 2012-09-11 | Carsten Kossendey | NF | no factor TF: 65-66 | | 2010-12-15 | Architects Cubed | NF | no factor TF: 64-65 |
|
