| 7187 | Composite, with 1 known prime factor. 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 | 3102 / 16550 |
Estimated T-Level: 45.9 ⓘ TF below 2^148 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 | 8F188D9F52D51045 | 1 | 0 | 1 | 3 | | Verified | No proof (small exponent) | 2017-10-12 | kkmrkkblmbrbk | 8F188D9F52D51045 | 1 | 3664 | 1 | 3 | | Verified | No proof (small exponent) | 2020-04-17 | Oliver Kruse | EF183A90DF342005 | 1 | 1945 | 5 | 3 | | Verified | No proof (small exponent) | 2024-02-03 | Wentao Huang | EF183A90DF342005 | 1 | 1569 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-05-26 | masser | NF-PP1 | Start=165/17, B1=1300000000, B2=1298700000000 | | 2024-09-04 | masser | NF-PM1 | B1=50000000000, B2=22579674677810250 | | 2024-02-03 | Wentao Huang | C-PRP | M7187/48871601 : EF183A90DF342005 | | 2023-02-17 | Denial140 | NF-PM1 | B1=10000000000, B2=2850622481957250 | | 2021-12-16 | ANONYMOUS | NF-PM1 | B1=100000000 | | 2020-04-17 | Oliver Kruse | C-PRP | M7187/48871601 : EF183A90DF342005 | | 2017-10-12 | kkmrkkblmbrbk | C-PRP | M7187/48871601 : 8F188D9F52D51045 | | 2017-09-21 | Oliver Kruse | C-PRP | M7187/48871601 : 8F188D9F52D51045 | | 2017-09-21 | Oliver Kruse | C-PRP | M7187/48871601 : 8F188D9F52D51045 |
|
