| 7519297 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 270 TF target 267 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 6 / 280 |
Estimated T-Level: 20.1 ⓘ TF below 2^62 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 2000-03-01 | Thomas Enders | D635BC9303FF9843 | 7135801 | Windows,Prime95,v19,(aka WV1) | | Factored | 2002-03-16 | Peter Doherty | D635BC9303FF9843 | 3777400 | Windows,Prime95,v21,(aka WX1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2020-06-02 | oodaira | 3274D4F53F1E4A4E | 1 | 1255624 | 5 | 3 | | Verified | PRP without proof (not generated) | 2020-06-04 | Luigi Morelli | 3274D4F53F1E4A4E | 1 | 4664388 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-10-17 | Sid & Andy | NF-PM1 | B1=2500000, B2=3943416750 | | 2025-06-18 | Greg | F | Factor: 538193267552682369889 / TF: 68-70 | | 2020-06-04 | Luigi Morelli | C-PRP | M7519297/538193267552682369889 : 3274D4F53F1E4A4E | | 2020-06-02 | oodaira | C-PRP | M7519297/538193267552682369889 : 3274D4F53F1E4A4E | | 2020-05-31 | chuenkit | F | Factor: 538193267552682369889 / TF: 68-69* | | 2018-07-31 | ramgeis | NF | no factor TF: 67-68 | | 2016-09-23 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-06-09 | VictordeHollander | NF | no factor TF: 65-66 | | 2013-12-06 | David Campeau | NF | no factor TF: 64-65 | | 2013-10-18 | Nesowa | NF | no factor TF: 63-64 | | 2012-05-03 | James Heinrich | NF-PM1 | B1=145000, B2=3117500, E=6 | | 2002-03-16 | -anonymous- | C-LL | D635BC9303FF9843 | | 2002-02-03 | -anonymous- | NF-PM1 | B1=35000, B2=315000 | | 2000-03-01 | -anonymous- | C-LL | D635BC9303FF9843 | | 1998-10-25 | -anonymous- | NF | no factor TF: 1-62 | | 1998-10-18 | -anonymous- | NF | no factor TF: 1-63 | | 1998-10-11 | -anonymous- | NF | no factor TF: 1-61 |
|
