| 81528037 | Tested as composite (unverified): unconfirmed Lucas-Lehmer test says not-prime No factors below 276 TF target 275 |
| P-1 | |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Unverified | 2017-10-23 | GerardCBlais | CE858DC64DE83D__ | 75651769 | Windows 64-bit,Prime95,v28.5,build 2 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-10-05 | Sid & Andy | NF | no factor TF: 75-76 | | 2017-10-23 | GerardCBlais | C-LL | CE858DC64DE83D__ | | 2016-10-09 | TheJudger | NF-PM1 | B1=695000, B2=14247500, E=12 | | 2016-09-20 | AirSquirrels | NF | no factor TF: 74-75 | | 2016-09-20 | AirSquirrels | NF | no factor TF: 73-74 | | 2016-09-20 | AirSquirrels | NF | no factor TF: 72-73 | | 2016-09-20 | AirSquirrels | NF | no factor TF: 71-72 | | 2011-02-26 | steinrar | NF | no factor TF: 70-71 | | 2011-02-26 | steinrar | NF | no factor TF: 69-70 | | 2011-02-26 | steinrar | NF | no factor TF: 68-69 | | 2011-02-26 | steinrar | NF | no factor TF: 67-68 | | 2011-02-26 | steinrar | NF | no factor TF: 65-67 | | 2010-12-13 | Architects Cubed | NF | no factor TF: 64-65 |
|
