| 3923 | Composite, with 5 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 244 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 640 / 640 | | 35 | 1000000 | 1566 / 1566 | | 40 | 3000000 | 4588 / 4588 | | 45 | 11000000 | 9201 / 9201 | | 50 | 44000000 | 16550 / 16550 | | 55 | 110000000 | 13496 / 40830 |
Estimated T-Level: 51.7 ⓘ TF below 2^167 is very unlikely to find new factors due to ECM effort. |
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | No proof (small exponent) | 2017-09-21 | Oliver Kruse | BB444D3CDE70D25A | 5 | 0 | 1 | 3 | | Verified | No proof (small exponent) | 2017-10-02 | kkmrkkblmbrbk | BB444D3CDE70D25A | 5 | 0 | 1 | 3 | | Verified | No proof (small exponent) | 2017-12-07 | ATH | BB444D3CDE70D25A | 5 | 3697 | 1 | 3 | | Verified | No proof (small exponent) | 2020-04-17 | Oliver Kruse | 86BDCAA25BCB45F5 | 5 | 1799 | 5 | 3 | | Verified | No proof (small exponent) | 2024-02-03 | Wentao Huang | 86BDCAA25BCB45F5 | 5 | 664 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-05-07 | masser | NF-PP1 | Start=181/13, B1=2600000000, B2=2597400000000 | | 2024-02-03 | Wentao Huang | C-PRP | M3923/219689/2236111/576576615840313157183/114367804353170466742107336497/1694839582876806072669316984852297 : 86BDCAA25BCB45F5 | | 2023-05-15 | JacobZ | NF-PM1 | B1=66000000000, B2=667136464473408930 | | 2021-08-27 | Seth_Tr | NF-PM1 | B1=100000000 | | 2020-04-17 | Oliver Kruse | C-PRP | M3923/219689/2236111/576576615840313157183/114367804353170466742107336497/1694839582876806072669316984852297 : 86BDCAA25BCB45F5 | | 2017-12-07 | ATH | C-PRP | M3923/219689/2236111/576576615840313157183/114367804353170466742107336497/1694839582876806072669316984852297 : BB444D3CDE70D25A | | 2017-10-02 | kkmrkkblmbrbk | C-PRP | M3923/219689/2236111/576576615840313157183/114367804353170466742107336497/1694839582876806072669316984852297 : BB444D3CDE70D25A | | 2017-09-21 | Oliver Kruse | C-PRP | M3923/known_factors : BB444D3CDE70D25A |
|
