| 5472913 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 64 / 280 |
Estimated T-Level: 21.1 ⓘ TF below 2^65 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1999-12-01 | Gerald E. Winebrenner | 122D66C56FBF4ABF | 1882231 | Windows,Prime95,v18,(aka WU1) | | Factored | 2001-02-04 | Dave Shapiro | 122D66C56FBF4ABF | 1934387 | Windows,Prime95,v20,(aka WW1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-27 | Daniil Tsarkov | B03F5A2C6A9AA46E | 1 | 1406047 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-28 | Seth_Tr | CERT | Proof certified good | | 2025-03-27 | Daniil Tsarkov | C-PRP | M5472913/133369006708256224042587817 : B03F5A2C6A9AA46E Proof Certified Good
Proof Power: 7
| | 2025-03-20 | fordobr | F-ECM | Factor: 133369006708256224042587817 / ECM curve 31, B1=50000, B2=45039225, Edwards Sigma=6211300494214354 | | 2021-11-10 | axn | NF-PM1 | B1=8000000, B2=400000000 | | 2021-09-28 | SRBase | NF | no factor TF: 71-72 | | 2021-09-01 | SRBase | NF | no factor TF: 70-71 | | 2021-08-18 | SRBase | NF | no factor TF: 69-70 | | 2020-08-31 | TJAOI | NF | no factor TF: 68-69 | | 2019-09-20 | USAFSS | NF-PM1 | B1=330000, B2=9817500 | | 2018-06-29 | ramgeis | NF | no factor TF: 67-68 | | 2016-07-04 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-08-24 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-12-30 | monst | NF | no factor TF: 64-65 | | 2014-12-30 | snme2pm1 | NF | no factor TF: 63-64 | | 2010-11-10 | Squeeky_Squirrel | NF-PM1 | B1=60000, B2=960000, E=6 | | 2009-05-05 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2001-02-04 | Dk Systems | C-LL | 122D66C56FBF4ABF | | 2001-01-14 | Dk Systems | NF-PM1 | B1=25000, B2=187500 | | 1999-12-01 | -anonymous- | C-LL | 122D66C56FBF4ABF | | 1999-01-29 | -anonymous- | C-LL | 3B536C9A2CAD41__ | | 1998-06-28 | -anonymous- | NF | no factor TF: 1-62 |
|
