| 8737 | Composite, with 5 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 244 |
| Factored | |
| P-1 factors | |
| 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 | 8104 / 16550 |
Estimated T-Level: 47.4 ⓘ TF below 2^153 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 | DC37C2A0F4F014B1 | 4 | 0 | 1 | 3 | | Factored | No proof (small exponent) | 2017-10-02 | kkmrkkblmbrbk | DC37C2A0F4F014B1 | 4 | 0 | 1 | 3 | | Factored | No proof (small exponent) | 2017-12-07 | ATH | DC37C2A0F4F014B1 | 4 | 3564 | 1 | 3 | | Factored | No proof (small exponent) | 2020-04-17 | Oliver Kruse | 63A257186720BB89 | 4 | 4269 | 5 | 3 | | Verified | No proof (small exponent) | 2023-08-08 | JacobZ | 63A257186720BB89 | 5 | 8506 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-05-02 | masser | NF-PP1 | Start=87/71, B1=1000000000, B2=999000000000 | | 2023-08-08 | JacobZ | C-PRP | M8737/681487/6640121/5724729222836153/30427637033372331604582934081/297225269049958516065232816142632074242944393961 : 63A257186720BB89 | | 2023-08-08 | JacobZ | F-PM1 | Factor: 297225269049958516065232816142632074242944393961 / B1=67000000000, B2=265422648792401100 | | 2021-12-16 | ANONYMOUS | NF-PM1 | B1=100000000 | | 2020-04-17 | Oliver Kruse | C-PRP | M8737/681487/6640121/5724729222836153/30427637033372331604582934081 : 63A257186720BB89 | | 2017-12-07 | ATH | C-PRP | M8737/681487/6640121/5724729222836153/30427637033372331604582934081 : DC37C2A0F4F014B1 | | 2017-10-02 | kkmrkkblmbrbk | C-PRP | M8737/681487/6640121/5724729222836153/30427637033372331604582934081 : DC37C2A0F4F014B1 | | 2017-09-21 | Oliver Kruse | C-PRP | M8737/known_factors : DC37C2A0F4F014B1 |
|
