| 5506427 | Composite, with 3 known prime factors. Cofactor is composite. Trial Factored to 270 TF target 266 |
| Factored | |
| P-1 factors | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 2 / 280 |
Estimated T-Level: 20.0 ⓘ TF below 2^62 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Bad | | Ernst W. Mayer | 21AF15A3890946DE | 0 | Mlucas,Ernst Mayer,v2.5 and later,(aka E2) | | Factored | 1998-11-21 | Scott Freeland | 21AF15A3890846DE | 0 | Windows,Prime95,v16,NT service,(aka WS5) | | Factored | 2003-09-29 | Gord Palameta | 21AF15A3890846DE | 2013825 | Linux 32-bit,Prime95,v23,(aka WZ2) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Factored | PRP without proof (not generated) | 2017-12-04 | kkmrkkblmbrbk | D4FEA0A36A668A81 | 1 | 4575768 | 5 | 3 | | Factored | PRP without proof (not generated) | 2018-07-01 | storm5510 | D4FEA0A36A668A81 | 1 | 2715656 | 5 | 3 | | Verified | Certified Good | 2025-06-06 | atk80230 | D4FEA0A36A668A81 | 3 | 2197254 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-06-06 | AZMango | CERT | Proof certified good | | 2025-06-06 | atk80230 | C-PRP | M5506427/3383848586464344713791/85013628477973271456311/1177228994713751148072311 : D4FEA0A36A668A81 Proof Certified Good
Proof Power: 7
| | 2025-06-01 | Sid & Andy | F-PM1 | Factors: 85013628477973271456311,1177228994713751148072311 / B1=4700000, B2=7611542400 | | 2025-05-10 | Sid & Andy | NF | no factor TF: 68-70 | | 2018-07-01 | storm5510 | C-PRP | M5506427/3383848586464344713791 : D4FEA0A36A668A81 | | 2017-12-04 | kkmrkkblmbrbk | C-PRP | M5506427/3383848586464344713791 : D4FEA0A36A668A81 | | 2011-01-14 | Lupo | F-ECM | Factor: 3383848586464344713791 | | 2009-05-01 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2003-09-29 | kkmrkkblmbrbk | C-LL | 21AF15A3890846DE | | 2003-09-14 | kkmrkkblmbrbk | NF-PM1 | B1=70000, B2=1330000, E=6 | | 1998-11-21 | -anonymous- | C-LL | 21AF15A3890846DE | | 1998-04-11 | -anonymous- | NF | no factor TF: 1-62 |
|
