| 2476381 | Composite, with 4 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 57 / 640 |
Estimated T-Level: 25.4 ⓘ TF below 2^80 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 | 55305096024032AF | 3 | 290145 | 5 | 3 | | Factored | PRP without proof (not generated) | 2017-11-29 | storm5510 | 55305096024032AF | 3 | 312633 | 5 | 3 | | Verified | Certified Good | 2025-01-19 | cramsey87 | 55305096024032AF | 4 | 2024076 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-01-20 | kylesherman12 | CERT | Proof certified good | | 2025-01-19 | cramsey87 | C-PRP | M2476381/1129229737/85385616881/246416877637848191/7543125749190777818292377 : 55305096024032AF Proof Certified Good
Proof Power: 7
| | 2025-01-14 | debrouxl | F-ECM | Factor: 7543125749190777818292377 / ECM curve 31, B1=61686, B2=7649064, Montgomery Sigma=1397160603992928 | | 2018-09-28 | alpertron | NF-PM1 | B1=2000000, B2=60000000, E=12 | | 2017-11-29 | storm5510 | C-PRP | M2476381/1129229737/85385616881/246416877637848191 : 55305096024032AF | | 2017-10-14 | Oliver Kruse | C-PRP | M2476381/1129229737/85385616881/246416877637848191 : 55305096024032AF | | 2015-07-15 | TJAOI | F | Factor: 246416877637848191 | | 2008-07-14 | George Woltman | F-ECM | Factor: 85385616881 |
|
