| 40538203 | Composite: proven not-prime with Lucas-Lehmer test No factors below 274 TF target 272 |
| P-1 | | B1 = | 1000000 | | B2 = | 20000000 |
|
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Bad | 2009-04-18 | curtisc | D48437A22BA91E30 | 2643464 | Windows Service,Prime95,v25.8,build 1 | | Verified | 2015-11-13 | McAlister | 4DBA7D45C454372B | 8456287 | Linux 64-bit,Prime95,v28.5,build 2 | | Verified | 2016-06-16 | AirSquirrels | 4DBA7D45C454372B | 37621902 | CUDALucas v2.05.1 |
|
| History | | Date | User | Type | Result |
|---|
| 2024-05-29 | mrh | NF | no factor TF: 68-69 | | 2020-08-03 | Sid & Andy | NF-PM1 | B1=1000000, B2=20000000 | | 2020-01-11 | -anonymous- | NF | no factor TF: 73-74 | | 2019-09-30 | -anonymous- | NF | no factor TF: 72-73 | | 2016-06-16 | AirSquirrels | C-LL | 4DBA7D45C454372B | | 2015-11-13 | McAlister | C-LL | 4DBA7D45C454372B | | 2015-04-27 | Gordon Spence | NF | no factor TF: 71-72 | | 2014-12-26 | NickOfTime | NF | no factor TF: 70-71 | | 2014-12-26 | NickOfTime | NF | no factor TF: 69-70 | | 2013-11-08 | Carsten Kossendey | NF | no factor TF: 68-69 | | 2009-04-18 | curtisc | C-LL | D48437A22BA91E30 | | 2009-03-08 | curtisc | NF-PM1 | B1=670000 | | 2007-01-16 | TwistedFate2k | NF | no factor TF: 1-68 |
|
