| 138937 | 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 | 193 / 1566 |
Estimated T-Level: 30.6 ⓘ TF below 2^97 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) | 2017-09-22 | Oliver Kruse | FC5E539651C35CAB | 1 | 0 | 1 | 3 | | Verified | No proof (small exponent) | 2017-09-22 | Oliver Kruse | FC5E539651C35CAB | 1 | 0 | 1 | 3 | | Verified | No proof (small exponent) | 2017-11-06 | kkmrkkblmbrbk | FC5E539651C35CAB | 1 | 75017 | 1 | 3 | | Verified | No proof (small exponent) | 2020-04-17 | Oliver Kruse | 01226CAD13BF1951 | 1 | 125217 | 5 | 3 | | Verified | Certified Good | 2024-02-03 | Wentao Huang | 01226CAD13BF1951 | 1 | 124152 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2026-01-08 | ViliamF | NF-PM1 | B1=100000000, B2=2131947868050 | | 2024-02-03 | curtisc | CERT | Proof certified good | | 2024-02-03 | Wentao Huang | C-PRP | M138937/100068818503 : 01226CAD13BF1951 Proof Certified Good
Proof Power: 5
| | 2020-04-17 | Oliver Kruse | C-PRP | M138937/100068818503 : 01226CAD13BF1951 | | 2017-11-06 | kkmrkkblmbrbk | C-PRP | M138937/100068818503 : FC5E539651C35CAB | | 2017-09-22 | Oliver Kruse | C-PRP | M138937/100068818503 : FC5E539651C35CAB | | 2017-09-22 | Oliver Kruse | C-PRP | M138937/100068818503 : FC5E539651C35CAB | | 2017-09-21 | Oliver Kruse | C-PRP | M138937/100068818503 : FC5E539651C35CAB | | 2017-03-22 | kkmrkkblmbrbk | NF-PM1 | B1=100000000, B2=2000000000, E=12 |
|
