| 2487431 | Composite, with 2 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 160 / 280 |
Estimated T-Level: 22.9 ⓘ TF below 2^71 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 | 5A63B748A680FA6F | 1 | 2043276 | 5 | 3 | | Factored | PRP without proof (not generated) | 2017-11-29 | storm5510 | 5A63B748A680FA6F | 1 | 2079531 | 5 | 3 | | Verified | Certified Good | 2025-04-17 | JC_Herles | 5A63B748A680FA6F | 2 | 351658 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-04-17 | ohestnes | CERT | Proof certified good | | 2025-04-17 | JC_Herles | C-PRP | M2487431/868730301889/154724111146936975675631 : 5A63B748A680FA6F Proof Certified Good
Proof Power: 7
| | 2025-04-17 | JC_Herles | F-ECM | Factor: 154724111146936975675631 / ECM curve 6, B1=65384, B2=117709515, Edwards Sigma=3952333820502825 | | 2022-08-19 | USAFSS | NF-PM1 | B1=224000, B2=203668920 | | 2017-11-29 | storm5510 | C-PRP | M2487431/868730301889 : 5A63B748A680FA6F | | 2017-10-14 | Oliver Kruse | C-PRP | M2487431/868730301889 : 5A63B748A680FA6F |
|
