| 9221 | 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 | 5954 / 16550 |
Estimated T-Level: 46.8 ⓘ TF below 2^150 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 | 08E774D7C7211C46 | 5 | 0 | 1 | 3 | | Verified | No proof (small exponent) | 2017-10-02 | kkmrkkblmbrbk | 08E774D7C7211C46 | 5 | 0 | 1 | 3 | | Verified | No proof (small exponent) | 2017-12-07 | ATH | 08E774D7C7211C46 | 5 | 5934 | 1 | 3 | | Verified | No proof (small exponent) | 2020-04-17 | Oliver Kruse | A1C8B9A07349EC7B | 5 | 4781 | 5 | 3 | | Verified | No proof (small exponent) | 2023-06-11 | LordJulius | A1C8B9A07349EC7B | 5 | 7193 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-04-10 | masser | NF-PP1 | Start=168/29, B1=1000000000, B2=999000000000 | | 2023-07-11 | JacobZ | NF-PM1 | B1=63000000000, B2=255469764292442700 | | 2023-06-11 | LordJulius | C-PRP | M9221/719239/91841161/168025063/5660569039/135084015432199 : A1C8B9A07349EC7B | | 2023-06-11 | LordJulius | NF-PM1 | B1=2000000000, B2=24398084610900 | | 2021-08-27 | Seth_Tr | NF-PM1 | B1=400000000 | | 2021-08-27 | Seth_Tr | NF-PM1 | B1=100000000 | | 2020-04-17 | Oliver Kruse | C-PRP | M9221/719239/91841161/168025063/5660569039/135084015432199 : A1C8B9A07349EC7B | | 2017-12-07 | ATH | C-PRP | M9221/719239/91841161/168025063/5660569039/135084015432199 : 08E774D7C7211C46 | | 2017-10-02 | kkmrkkblmbrbk | C-PRP | M9221/719239/91841161/168025063/5660569039/135084015432199 : 08E774D7C7211C46 | | 2017-09-21 | Oliver Kruse | C-PRP | M9221/known_factors : 08E774D7C7211C46 |
|
