| 11238859 | Composite: proven not-prime with Lucas-Lehmer test No factors below 274 TF target 268 |
| P-1 | | B1 = | 10000000 | | B2 = | 20000264130 |
|
| 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 |
|---|
| Bad | 2001-04-21 | J. B. Simpas | 840BB30ED062DFB8 | 8189034 | Windows,Prime95,v20,(aka WW1) | | Verified | 2001-12-22 | Ars Technica Team Prime Rib | 1193A928740E5851 | 1945031 | Windows,Prime95,v21,(aka WX1) | | Verified | 2004-03-08 | Diogo Martel | 1193A928740E5851 | 370501 | Windows,Prime95,v23,(aka WZ1) |
|
| History | | Date | User | Type | Result |
|---|
| 2025-11-03 | vsh | NF | no factor TF: 73-74 | | 2025-02-08 | James Heinrich | NF | no factor TF: 72-73 | | 2024-12-26 | vsh | NF-PM1 | B1=10000000, B2=20000264130 | | 2024-07-08 | vsh | NF | no factor TF: 72-73 | | 2021-12-31 | LaurV | NF-PM1 | B1=6189107, B2=185673210 | | 2021-10-30 | SRBase | NF | no factor TF: 71-72 | | 2021-08-14 | SRBase | NF | no factor TF: 70-71 | | 2021-08-06 | SRBase | NF | no factor TF: 69-70 | | 2020-04-21 | riccardo uberti | NF-PM1 | B1=430000, B2=8500000 | | 2017-12-27 | ramgeis | NF | no factor TF: 68-69 | | 2017-12-27 | ramgeis | NF | no factor TF: 67-68 | | 2015-12-28 | VictordeHollander | NF | no factor TF: 66-67 | | 2015-05-12 | Nesowa | NF | no factor TF: 65-66 | | 2013-11-22 | lycorn | NF | no factor TF: 64-65 | | 2004-03-08 | lycorn | C-LL | 1193A928740E5851 | | 2001-12-22 | DSheets | C-LL | 1193A928740E5851 | | 2001-04-21 | -anonymous- | C-LL | 840BB30ED062DFB8 | | 2001-04-01 | -anonymous- | NF-PM1 | B1=130000, B2=1722500 | | 2000-12-31 | -anonymous- | NF-PM1 | B1=135000, B2=1822500 | | 1999-12-08 | -anonymous- | NF | no factor TF: 1-64 |
|
