| 7663427 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 269 TF target 267 |
| Factored | |
| P-1 factors | |
| 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 | 1999-08-31 | Jason Slemons | 4AB7F0426386B9F9 | 1932789 | Windows,Prime95,v18,(aka WU1) | | Factored | 2003-01-25 | Daniel Swanson | 4AB7F0426386B9F9 | 5900205 | Windows,Prime95,v22,(aka WY1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2020-05-25 | MarkS | 855DE2F4914AAAB4 | 1 | 3153790 | 5 | 3 | | Verified | PRP without proof (not generated) | 2020-05-25 | ATH | 855DE2F4914AAAB4 | 1 | 7316209 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2020-05-25 | ATH | C-PRP | M7663427/5281690562984762266817 : 855DE2F4914AAAB4 | | 2020-05-25 | MarkS | C-PRP | M7663427/5281690562984762266817 : 855DE2F4914AAAB4 | | 2020-05-24 | GdS | F-PM1 | Factor: 5281690562984762266817 / B1=1337698, B2=32104742 | | 2020-03-20 | TJAOI | NF | no factor TF: 68-69 | | 2018-07-31 | ramgeis | NF | no factor TF: 67-68 | | 2016-09-17 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-06-12 | VictordeHollander | NF | no factor TF: 65-66 | | 2013-12-07 | David Campeau | NF | no factor TF: 64-65 | | 2013-10-11 | Nesowa | NF | no factor TF: 63-64 | | 2012-08-01 | Nesowa | NF-PM1 | B1=95000, B2=1757500, E=6 | | 2003-01-25 | dswanson | C-LL | 4AB7F0426386B9F9 | | 2002-03-24 | -anonymous- | NF-PM1 | B1=35000, B2=271250 | | 1999-09-07 | sssvs | C-LL | 4AB7F0426386B9F9 | | 1999-08-31 | sssvs | C-LL | 4AB7F0426386B9F9 | | 1998-08-30 | -anonymous- | NF | no factor TF: 1-63 | | 1998-07-29 | -anonymous- | NF | no factor TF: 1-62 |
|
