| 2640511 | Composite, with 3 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 150 / 280 |
Estimated T-Level: 22.7 ⓘ TF below 2^70 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 | PRP without proof (not generated) | 2017-10-18 | Oliver Kruse | 7992CADC735B45DD | 2 | 2563372 | 5 | 3 | | Factored | PRP without proof (not generated) | 2017-12-02 | storm5510 | 7992CADC735B45DD | 2 | 1271340 | 5 | 3 | | Verified | Certified Good | 2025-08-26 | Joe S. | 7992CADC735B45DD | 3 | 623055 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-08-27 | ec14 | CERT | Proof certified good | | 2025-08-26 | Joe S. | C-PRP | M2640511/110901463/5513386969/2986573810455767521356943 : 7992CADC735B45DD Proof Certified Good
Proof Power: 7
| | 2025-08-26 | Joe S. | F-ECM | Factor: 2986573810455767521356943 / ECM curve 36, B1=65384, B2=86479575, Edwards Sigma=4523601446651965 | | 2019-07-04 | alpertron | NF-PM1 | B1=2000000, B2=60000000, E=12 | | 2017-12-02 | storm5510 | C-PRP | M2640511/110901463/5513386969 : 7992CADC735B45DD | | 2017-10-18 | Oliver Kruse | C-PRP | M2640511/110901463/5513386969 : 7992CADC735B45DD | | 2008-07-14 | George Woltman | F-ECM | Factor: 5513386969 |
|
