| 7514447 | 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 | 1999-10-29 | Stephen Wood | AD119D76B7F0BF5A | 1220273 | Linux 32-bit,Prime95,v18,(aka WU2) | | Bad | 2002-05-11 | Noel Casey | 5DCFEBCCF475BDD0 | 4473468 | Windows,Prime95,v20,(aka WW1) | | Factored | 2002-07-20 | Ars Technica Team Prime Rib | AD119D76B7F0BF5A | 3735811 | Linux 32-bit,Prime95,v22,(aka WY2) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2020-06-02 | Oliver Kruse | 0A75536347D66999 | 1 | 222677 | 5 | 3 | | Verified | PRP without proof (not generated) | 2020-06-05 | arnaud | 0A75536347D66999 | 1 | 4099629 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-10-16 | Sid & Andy | NF-PM1 | B1=2500000, B2=3943416750 | | 2025-06-18 | Greg | F | Factor: 566411039093172489959 / TF: 68-70 | | 2020-06-05 | arnaud | C-PRP | M7514447/566411039093172489959 : 0A75536347D66999 | | 2020-06-02 | Oliver Kruse | C-PRP | M7514447/566411039093172489959 : 0A75536347D66999 | | 2020-05-31 | chuenkit | F | Factor: 566411039093172489959 / TF: 68-69* | | 2018-07-31 | ramgeis | NF | no factor TF: 67-68 | | 2016-09-22 | Gordon Spence | NF | no factor TF: 66-67 | | 2016-09-14 | Squeeky_Squirrel | NF-PM1 | B1=235000, B2=5933750, E=12 | | 2015-06-09 | VictordeHollander | NF | no factor TF: 65-66 | | 2013-11-30 | David Campeau | NF | no factor TF: 64-65 | | 2013-10-18 | Nesowa | NF | no factor TF: 63-64 | | 2012-07-03 | James Heinrich | NF-PM1 | B1=90000, B2=1687500, E=6 | | 2002-07-20 | Team Prime Rib | C-LL | AD119D76B7F0BF5A | | 2002-05-11 | -anonymous- | C-LL | 5DCFEBCCF475BDD0 | | 2002-02-03 | -anonymous- | NF-PM1 | B1=35000, B2=35000 | | 1999-10-29 | Stephen Wood | C-LL | AD119D76B7F0BF5A | | 1999-01-02 | -anonymous- | NF | no factor TF: 1-63 | | 1998-07-21 | -anonymous- | NF | no factor TF: 1-62 |
|
