| 8377 | Composite, with 6 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 | 7264 / 16550 |
Estimated T-Level: 47.2 ⓘ TF below 2^152 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 |
|---|
| Factored | No proof (small exponent) | 2017-09-21 | Oliver Kruse | A93C1F7945B46E4B | 5 | 0 | 1 | 3 | | Factored | No proof (small exponent) | 2017-10-02 | kkmrkkblmbrbk | A93C1F7945B46E4B | 5 | 0 | 1 | 3 | | Factored | No proof (small exponent) | 2017-12-07 | ATH | A93C1F7945B46E4B | 5 | 8365 | 1 | 3 | | Factored | No proof (small exponent) | 2020-04-17 | Oliver Kruse | F39A8EB32D370564 | 5 | 636 | 5 | 3 | | Verified | No proof (small exponent) | 2021-03-24 | Bruno Victal | F39A8EB32D370564 | 6 | 5995 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-05-15 | masser | NF-PP1 | Start=131/17, B1=1300000000, B2=1298700000000 | | 2023-08-26 | JacobZ | NF-PM1 | B1=70000000000, B2=265422648792401100 | | 2021-08-27 | Seth_Tr | NF-PM1 | B1=400000000 | | 2021-03-24 | Bruno Victal | C-PRP | M8377/50263/134033/787439/2596871/430798028448313/253627056500386361327839418106645372884929 : F39A8EB32D370564 | | 2021-03-24 | Bruno Victal | F-ECM | Factor: 253627056500386361327839418106645372884929 | | 2020-04-17 | Oliver Kruse | C-PRP | M8377/50263/134033/787439/2596871/430798028448313 : F39A8EB32D370564 | | 2017-12-07 | ATH | C-PRP | M8377/50263/134033/787439/2596871/430798028448313 : A93C1F7945B46E4B | | 2017-10-02 | kkmrkkblmbrbk | C-PRP | M8377/50263/134033/787439/2596871/430798028448313 : A93C1F7945B46E4B | | 2017-09-21 | Oliver Kruse | C-PRP | M8377/known_factors : A93C1F7945B46E4B |
|
