| 7656211 | 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 | 2000-02-09 | Lawrence V. Castiglione III | 29A4707773B74173 | 6634109 | Windows,Prime95,v19,(aka WV1) | | Factored | 2002-05-25 | Björn Hoffmann | 29A4707773B74173 | 4358780 | 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) | 2020-05-23 | xyuzyz | DC361506DD37A84B | 1 | 5270602 | 5 | 3 | | Verified | PRP without proof (not generated) | 2020-05-25 | daveward2005 | DC361506DD37A84B | 1 | 1660875 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-10-18 | Sid & Andy | NF-PM1 | B1=2400000, B2=3647339850 | | 2020-05-25 | daveward2005 | C-PRP | M7656211/144380922177105519327529 : DC361506DD37A84B | | 2020-05-23 | xyuzyz | C-PRP | M7656211/144380922177105519327529 : DC361506DD37A84B | | 2020-05-21 | GdS | F-PM1 | Factor: 144380922177105519327529 / B1=310809, B2=6216181 | | 2020-03-27 | 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 | | 2012-07-29 | Nesowa | NF-PM1 | B1=95000, B2=1757500, E=6 | | 2002-05-25 | -anonymous- | C-LL | 29A4707773B74173 | | 2002-03-31 | -anonymous- | NF-PM1 | B1=40000, B2=400000 | | 2000-02-09 | Lawrence V. Castiglione III | C-LL | 29A4707773B74173 | | 1998-08-24 | Ernst W. Mayer | NF | no factor TF: 1-63 |
|
