| 3861821 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 264 |
| 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 |
|---|
| Bad | | Ed Kirk | 2DC0014F7B05DBC0 | 0 | Windows,Prime95,v14,(aka WQ1) | | Factored | 2000-07-12 | Eric Strand | C890FFB9F4DA3D9D | 1826600 | Linux 32-bit,Prime95,v20,(aka WW2) | | Factored | 2001-03-18 | Binary Digits | C890FFB9F4DA3D9D | 1897021 | Windows,Prime95,v20,(aka WW1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2017-09-20 | kkmrkkblmbrbk | 5846F986F8473F44 | 1 | 0 | 1 | 3 | | Verified | PRP without proof (not generated) | 2017-12-21 | storm5510 | 5846F986F8473F44 | 1 | 2952719 | 1 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2022-05-25 | Joss | NF-PM1 | B1=100000, B2=130364850 | | 2022-03-22 | Joss | NF-PM1 | B1=100000 | | 2022-03-03 | Joss | NF-PM1 | B1=90000 | | 2017-12-21 | storm5510 | C-PRP | M3861821/4783988376959966754121 : 5846F986F8473F44 | | 2017-09-20 | kkmrkkblmbrbk | C-PRP | M3861821/4783988376959966754121 : 5846F986F8473F44 | | 2012-09-18 | Lukasz Wrobel | F-ECM | Factor: 4783988376959966754121 | | 2012-02-20 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2011-02-25 | markr | NF | no factor TF: 61-62 | | 2010-09-11 | markr | NF-PM1 | B1=95000, B2=1995000, E=6 | | 2009-02-23 | S485122 | NF | no factor TF: 60-61 | | 2001-03-18 | binarydigits | C-LL | C890FFB9F4DA3D9D | | 2000-07-12 | estrand | C-LL | C890FFB9F4DA3D9D | | 2000-06-23 | estrand | NF-PM1 | B1=15000, B2=15000 |
|
