| 12562001 | Composite: proven not-prime with Lucas-Lehmer test No factors below 273 TF target 268 |
| P-1 | | B1 = | 3000000 | | B2 = | 11374137390 |
|
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 2 / 280 |
Estimated T-Level: 20.0 ⓘ TF below 2^62 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Verified | 2001-09-22 | Eric Jezek | FB44058A32220D36 | 10212905 | Windows,Prime95,v19,(aka WV1) | | Verified | 2004-08-06 | Laurentiu Vornicu | FB44058A32220D36 | 11882792 | Windows,Prime95,v23,(aka WZ1) |
|
| History | | Date | User | Type | Result |
|---|
| 2024-08-12 | linament | NF | no factor TF: 72-73 | | 2023-03-17 | Naegi Makoto | NF-PM1 | B1=3000000, B2=11374137390 | | 2021-10-29 | -anonymous- | NF | no factor TF: 71-72 | | 2021-08-28 | SRBase | NF | no factor TF: 70-71 | | 2021-08-07 | SRBase | NF | no factor TF: 69-70 | | 2019-01-17 | riccardo uberti | NF-PM1 | B1=430000, B2=8500000, E=12 | | 2017-12-16 | ramgeis | NF | no factor TF: 68-69 | | 2017-12-16 | ramgeis | NF | no factor TF: 67-68 | | 2015-03-24 | Tha | NF | no factor TF: 66-67 | | 2014-03-28 | Nesowa | NF | no factor TF: 65-66 | | 2013-06-18 | lycorn | NF | no factor TF: 64-65 | | 2004-08-06 | LaurV | C-LL | FB44058A32220D36 | | 2004-05-11 | dave_0273 | NF-PM1 | B1=75000, B2=1368750, E=6 | | 2001-09-22 | -anonymous- | C-LL | FB44058A32220D36 | | 2000-06-29 | -anonymous- | NF | no factor TF: 1-64 | | 2000-04-05 | -anonymous- | NF | no factor TF: 1-64 | | 2000-03-22 | -anonymous- | NF | no factor TF: 1-54 | | 2000-03-22 | -anonymous- | NF | no factor TF: 1-56 |
|
