| 2328649 | Composite, with 2 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 262 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 120 / 640 |
Estimated T-Level: 25.9 ⓘ TF below 2^81 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) | 2017-10-11 | Oliver Kruse | 881BCC64C82E9533 | 1 | 0 | 1 | 3 | | Factored | PRP without proof (not generated) | 2017-11-23 | kkmrkkblmbrbk | 881BCC64C82E9533 | 1 | 1387495 | 1 | 3 | | Verified | Certified Good | 2025-03-24 | Daniil Tsarkov | AC3B91B7DC7B9F38 | 2 | 2260815 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-24 | TedB | CERT | Proof certified good | | 2025-03-24 | Daniil Tsarkov | C-PRP | Proof Certified Good
Proof Power: 7
| | 2025-03-24 | Daniil Tsarkov | F-ECM | Factor: 2633119855874659406452217 / ECM curve 39, B1=80130, B2=117709515, Edwards Sigma=7154079958480994 | | 2021-04-12 | ViliamF | NF-PM1 | B1=5000000, B2=505000000 | | 2018-03-05 | alpertron | NF-PM1 | B1=500000, B2=15000000, E=12 | | 2017-11-23 | kkmrkkblmbrbk | C-PRP | M2328649/150871864666561 : 881BCC64C82E9533 | | 2017-10-11 | Oliver Kruse | C-PRP | M2328649/150871864666561 : 881BCC64C82E9533 |
|
