| 2564143 | Composite, with 2 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 143 / 280 |
Estimated T-Level: 22.6 ⓘ 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) | 2017-10-15 | Oliver Kruse | 2446D9E6AB3BA468 | 1 | 1018280 | 5 | 3 | | Factored | PRP without proof (not generated) | 2017-12-01 | storm5510 | 2446D9E6AB3BA468 | 1 | 1920420 | 5 | 3 | | Verified | Certified Good | 2025-06-25 | PluckyPizzicato | 2446D9E6AB3BA468 | 2 | 2366394 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-06-25 | Gnarwhals | CERT | Proof certified good | | 2025-06-25 | PluckyPizzicato | C-PRP | M2564143/34358249513359/317845721438434135911743 : 2446D9E6AB3BA468 Proof Certified Good
Proof Power: 7
| | 2025-06-25 | PluckyPizzicato | F-ECM | Factor: 317845721438434135911743 / ECM curve 33, B1=65384, B2=88280115, Edwards Sigma=3435610390410485 | | 2022-08-29 | USAFSS | NF-PM1 | B1=480000, B2=446264910 | | 2017-12-01 | storm5510 | C-PRP | M2564143/34358249513359 : 2446D9E6AB3BA468 | | 2017-10-15 | Oliver Kruse | C-PRP | M2564143/34358249513359 : 2446D9E6AB3BA468 |
|
