| 2493767 | Composite, with 2 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 103 / 280 |
Estimated T-Level: 21.8 ⓘ TF below 2^68 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) | 2017-10-14 | Oliver Kruse | 8238A5AD55330239 | 1 | 1769390 | 5 | 3 | | Factored | PRP without proof (not generated) | 2017-11-30 | storm5510 | 8238A5AD55330239 | 1 | 1371682 | 5 | 3 | | Verified | Certified Good | 2025-04-27 | JC_Herles | 8238A5AD55330239 | 2 | 1871994 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-04-27 | ytml | CERT | Proof certified good | | 2025-04-27 | JC_Herles | C-PRP | M2493767/818002882759991/1151249593764074737393 : 8238A5AD55330239 Proof Certified Good
Proof Power: 7
| | 2025-04-27 | JC_Herles | F-ECM | Factor: 1151249593764074737393 / ECM curve 17, B1=65384, B2=108101175, Edwards Sigma=3773671766107836 | | 2019-07-04 | alpertron | NF-PM1 | B1=2000000, B2=60000000, E=12 | | 2017-11-30 | storm5510 | C-PRP | M2493767/818002882759991 : 8238A5AD55330239 | | 2017-10-14 | Oliver Kruse | C-PRP | M2493767/818002882759991 : 8238A5AD55330239 |
|
