| 2751461 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 270 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 100 / 640 |
Estimated T-Level: 25.8 ⓘ TF below 2^81 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Barton Meeks | 46C74165EE9E39D5 | 0 | Windows,Prime95,v14,(aka WQ1) | | Factored | 1999-04-23 | Maurizio Vicentini | 46C74165EE9E39D5 | 910946 | Windows,Prime95,v18,(aka WU1) | | Factored | 2018-08-14 | kkmrkkblmbrbk | 46C74165EE9E39D5 | 2038040 | Windows 64-bit,Prime95,v29.4,build 5 |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-24 | fordobr | 2C35BBD1C512C025 | 1 | 1299862 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-24 | Marvinist | CERT | Proof certified good | | 2025-03-24 | fordobr | C-PRP | M2751461/212512067727501415271774417 : 2C35BBD1C512C025 Proof Certified Good
Proof Power: 7
| | 2025-03-24 | fordobr | F-ECM | Factor: 212512067727501415271774417 / ECM curve 39, B1=173209, B2=616193655, Edwards Sigma=4910047307902910 | | 2023-12-01 | TJAOI | NF | no factor TF: 69-70 | | 2023-02-14 | Architects Cubed | NF-PM1 | B1=5000000, B2=8681331750 | | 2021-06-28 | TJAOI | NF | no factor TF: 68-69 | | 2019-02-19 | chuenkit | NF | no factor TF: 67-68 | | 2018-08-14 | kkmrkkblmbrbk | C-LL | 46C74165EE9E39D5 | | 2017-10-09 | Gordon Spence | NF | no factor TF: 66-67 | | 2016-12-09 | mikr | NF-PM1 | B1=2700000, B2=84000000, E=12 | | 2016-02-23 | Mark Rose | NF | no factor TF: 1-60 | | 2016-02-05 | ramgeis | NF | no factor TF: 65-66 | | 2015-04-21 | VictordeHollander | NF | no factor TF: 64-65 | | 2015-04-21 | VictordeHollander | NF | no factor TF: 63-64 | | 2013-01-10 | dbaugh | NF | no factor TF: 62-63 | | 2012-04-02 | Grant McCracken | NF | no factor TF: 61-62 | | 2011-05-05 | James Heinrich | NF-PM1 | B1=190000, B2=4655000, E=6 | | 2011-01-22 | Joss | NF-PM1 | B1=50000 | | 2011-01-02 | Joss | NF-PM1 | B1=30000 | | 2010-12-21 | Joss | NF-PM1 | B1=20000 | | 2009-01-28 | Sturle Sunde | NF | no factor TF: 60-61 | | 2003-11-28 | Team Prime Rib | NF-PM1 | B1=15000, B2=225000 | | 2003-11-16 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 1999-04-23 | -anonymous- | C-LL | 46C74165EE9E39D5 |
|
