| 81821569 | Tested as composite (unverified): unconfirmed Lucas-Lehmer test says not-prime No factors below 276 TF target 275 |
| Assignments | | Assigned | User | Work Type | Stage | % Done | Updated | Est Complete | Expired |
|---|
| 2026-07-29 | Greg | D | LL | 81.22 % | 2026-08-31 | 2026-09-02 | |
|
| P-1 | | B1 = | 5400000 | | B2 = | 5400010770 |
|
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Unverified | 2018-10-06 | Stephan Grupp | 6948F5A2C7B094__ | 64340154 | Windows 64-bit,Prime95,v29.4,build 7 |
|
| History | | Date | User | Type | Result |
|---|
| 2026-08-30 | Ensigma | NF-PM1 | B1=5400000, B2=5400010770 | | 2026-08-24 | Ensigma | NF-PM1 | B1=5400000, B2=2700928230 | | 2026-08-24 | Ensigma | NF-PM1 | B1=5400000, B2=900576600 | | 2026-06-12 | Sid & Andy | NF | no factor TF: 75-76 | | 2018-10-06 | Stephan Grupp | C-LL | 6948F5A2C7B094__ | | 2016-11-20 | TheJudger | NF-PM1 | B1=695000, B2=14073750, E=12 | | 2016-11-13 | TheJudger | NF | no factor TF: 74-75 | | 2016-11-13 | TheJudger | NF | no factor TF: 73-74 | | 2016-09-08 | The Mawn | NF | no factor TF: 72-73 | | 2016-09-08 | The Mawn | NF | no factor TF: 71-72 | | 2013-08-04 | DoubleAgent | NF | no factor TF: 70-71 | | 2013-06-12 | SMoffat | NF | no factor TF: 69-70 | | 2013-06-11 | SMoffat | NF | no factor TF: 68-69 | | 2013-06-10 | SMoffat | NF | no factor TF: 67-68 | | 2013-01-30 | Andriy Makukha | 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 |
|
