| 3835907 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 271 TF target 264 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 166 / 280 |
Estimated T-Level: 23.0 ⓘ TF below 2^71 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-05-16 | abruno | 724E86F7457D8550 | 0 | Windows,Prime95,v15,(aka WR1) | | Factored | 1999-11-24 | David Phillips | 724E86F7457D8550 | 2838853 | Windows,Prime95,v17,(aka WT1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-13 | fordobr | 19E13A51F0A3618A | 1 | 2213823 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-13 | TedB | CERT | Proof certified good | | 2025-03-13 | fordobr | C-PRP | M3835907/1197099076275603110902991 : 19E13A51F0A3618A Proof Certified Good
Proof Power: 7
| | 2025-03-13 | fordobr | F-ECM | Factor: 1197099076275603110902991 / ECM curve 11, B1=110421, B2=275660385, Edwards Sigma=4826930185434571 | | 2024-11-05 | Joss | NF-PM1 | B1=10000000, B2=13809355560 | | 2024-07-22 | TJAOI | NF | no factor TF: 70-71 | | 2024-03-08 | Joss | NF-PM1 | B1=10000000, B2=5029784760 | | 2023-12-13 | Joss | NF-PM1 | B1=2325158, B2=2514892380 | | 2022-05-13 | DRobinsonPE | NF | no factor TF: 69-70 | | 2021-01-28 | axn | NF-PM1 | B1=15000000, B2=750000000 | | 2020-09-29 | TJAOI | NF | no factor TF: 68-69 | | 2018-09-17 | TJAOI | NF | no factor TF: 67-68 | | 2016-11-19 | Gordon Spence | NF | no factor TF: 66-67 | | 2016-08-12 | Joss | NF-PM1 | B1=219542, B2=4390840, E=6 | | 2016-03-07 | ramgeis | NF | no factor TF: 65-66 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2016-02-20 | Joss | NF-PM1 | B1=219542, B2=2195420, E=6 | | 2015-01-18 | VictordeHollander | NF | no factor TF: 64-65 | | 2015-01-18 | VictordeHollander | NF | no factor TF: 63-64 | | 2014-10-17 | Joss | NF-PM1 | B1=86732 | | 2012-04-20 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2011-10-29 | Squeeky_Squirrel | NF-PM1 | B1=70000, B2=1137500, E=6 | | 2011-03-07 | markr | NF | no factor TF: 61-62 | | 2009-07-27 | Carsten Kossendey | NF-PM1 | B1=20000, B2=270000 | | 2009-02-27 | S485122 | NF | no factor TF: 60-61 | | 1999-11-24 | -anonymous- | C-LL | 724E86F7457D8550 | | 1998-05-16 | -anonymous- | C-LL | 724E86F7457D8550 | | 1998-04-21 | -anonymous- | NF | no factor TF: 1-60 |
|
