| 31220003 | Composite: proven not-prime with Lucas-Lehmer test No factors below 275 TF target 271 |
| P-1 | | B1 = | 1000000 | | B2 = | 30000000 |
|
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Verified | 2008-10-15 | Stephen Wood | 08668C2451DC35F3 | 19346223 | Linux 32-bit,Prime95,v23,(aka WZ2) | | Verified | 2013-05-15 | Julian B | 08668C2451DC35F3 | 6417419 | Windows 64-bit,Prime95,v26.6,build 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2021-10-04 | TheJudger | NF | no factor TF: 74-75 | | 2021-08-23 | Sid & Andy | NF-PM1 | B1=1000000, B2=30000000 | | 2020-04-01 | -anonymous- | NF | no factor TF: 73-74 | | 2019-12-20 | -anonymous- | NF | no factor TF: 71-72 | | 2019-12-20 | -anonymous- | NF | no factor TF: 72-73 | | 2018-04-22 | ramgeis | NF | no factor TF: 70-71 | | 2013-05-15 | Julian B | C-LL | 08668C2451DC35F3 | | 2013-02-13 | bcp19 | NF | no factor TF: 69-70 | | 2012-06-28 | kracker | NF | no factor TF: 68-69 | | 2008-10-14 | Stephen Wood | C-LL | 08668C2451DC35F3 | | 2006-05-12 | -anonymous- | NF | no factor TF: 1-68 | | 2006-05-12 | -anonymous- | NF-PM1 | B1=475000 | | 2005-10-04 | Team Prime Rib | NF | no factor TF: 1-67 | | 2003-07-06 | -anonymous- | NF | no factor TF: 1-59 | | 2003-06-06 | Joss | NF | no factor TF: 1-58 | | 2001-08-31 | Net_Force | NF | no factor TF: 1-56 | | 2001-01-14 | Joss | NF | no factor TF: 1-52 |
|
