| 3863863 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 264 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 3 / 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 | | Jarto Tarpio | BD975AD6071F4B79 | 0 | Linux 32-bit,Prime95,v14,(aka WQ2) | | Factored | 1999-08-22 | Debbie Dozier | BD975AD6071F4B79 | 2564284 | Windows,Prime95,v18,(aka WU1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2017-09-20 | kkmrkkblmbrbk | 512A1681E83451F0 | 1 | 0 | 1 | 3 | | Verified | PRP without proof (not generated) | 2017-12-24 | storm5510 | 512A1681E83451F0 | 1 | 2762825 | 1 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2022-05-26 | Joss | NF-PM1 | B1=200000, B2=130364850 | | 2017-12-24 | storm5510 | C-PRP | M3863863/66281313495051784903 : 512A1681E83451F0 | | 2017-09-20 | kkmrkkblmbrbk | C-PRP | M3863863/66281313495051784903 : 512A1681E83451F0 | | 2011-10-20 | Squeeky_Squirrel | F-PM1 | Factor: 66281313495051784903 | | 2011-02-22 | markr | NF | no factor TF: 61-62 | | 2009-07-28 | Carsten Kossendey | NF-PM1 | B1=20000, B2=275000 | | 2009-02-24 | S485122 | NF | no factor TF: 60-61 | | 1999-08-22 | -anonymous- | C-LL | BD975AD6071F4B79 |
|
