| 13708351 | Composite: proven not-prime with Lucas-Lehmer test No factors below 273 TF target 269 |
| P-1 | | B1 = | 2000000 | | B2 = | 1656047250 |
|
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 1 / 280 |
Estimated T-Level: 20.0 ⓘ TF below 2^61 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Verified | 2002-09-14 | Joachim Hertel | 11111B6CCDA6DAE3 | 8439129 | Windows,Prime95,v20,NT service,(aka WW5) | | Verified | 2005-05-12 | Marc Getty / Phil Fizur | 11111B6CCDA6DAE3 | 12108755 | Windows,Prime95,v22,NT service,(aka WY5) |
|
| History | | Date | User | Type | Result |
|---|
| 2024-01-13 | nordi | NF-PM1 | B1=2000000, B2=1656047250 | | 2024-01-01 | nordi | NF-PM1 | B1=2000000 | | 2023-11-10 | Sid & Andy | NF | no factor TF: 72-73 | | 2021-09-23 | Jon Pace | NF | no factor TF: 71-72 | | 2021-09-04 | SRBase | NF | no factor TF: 70-71 | | 2015-11-24 | ramgeis | NF | no factor TF: 69-70 | | 2015-10-14 | Bruno Victal | NF-PM1 | B1=500000, B2=15000000, E=12 | | 2015-10-14 | Bruno Victal | NF | no factor TF: 68-69 | | 2015-10-14 | Bruno Victal | NF | no factor TF: 67-68 | | 2015-08-16 | Nesowa | NF | no factor TF: 66-67 | | 2014-07-02 | Nesowa | NF | no factor TF: 65-66 | | 2005-05-12 | -anonymous- | C-LL | 11111B6CCDA6DAE3 | | 2004-08-06 | Doug Miles | NF | no factor TF: 1-65 | | 2003-12-23 | Doug Miles | NF | no factor TF: 1-65 | | 2003-01-16 | Doug Miles | NF | no factor TF: 1-65 | | 2002-10-12 | Doug Miles | NF | no factor TF: 1-65 | | 2002-09-14 | -anonymous- | C-LL | 11111B6CCDA6DAE3 | | 2002-08-24 | Doug Miles | NF | no factor TF: 1-65 | | 2002-05-11 | -anonymous- | NF-PM1 | B1=200000, B2=200000 | | 2002-02-10 | -anonymous- | NF-PM1 | B1=155000, B2=2131250 | | 2001-11-14 | -anonymous- | NF-PM1 | B1=200000, B2=200000 | | 2001-02-04 | Doug Miles | NF | no factor TF: 1-65 | | 2000-08-24 | Doug Miles | NF | no factor TF: 1-65 | | 2000-07-25 | -anonymous- | NF | no factor TF: 1-64 | | 2000-06-28 | -anonymous- | NF | no factor TF: 1-59 |
|
