| 2494981 | Composite, with 3 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 171 / 280 |
Estimated T-Level: 23.1 ⓘ TF below 2^72 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 | 1B966029EA6532DC | 2 | 370376 | 5 | 3 | | Factored | PRP without proof (not generated) | 2017-11-30 | storm5510 | 1B966029EA6532DC | 2 | 2045564 | 5 | 3 | | Verified | Certified Good | 2025-07-03 | feather | 1B966029EA6532DC | 3 | 2330758 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-07-03 | Mitchcan | CERT | Proof certified good | | 2025-07-03 | feather | C-PRP | M2494981/74849431/419156809/78062987196207482296530727 : 1B966029EA6532DC Proof Certified Good
Proof Power: 7
| | 2025-07-03 | feather | F-ECM | Factor: 78062987196207482296530727 / ECM curve 50, B1=73163, B2=19026735, Edwards Sigma=5082776620807703 | | 2019-07-04 | alpertron | NF-PM1 | B1=2000000, B2=60000000, E=12 | | 2017-11-30 | storm5510 | C-PRP | M2494981/74849431/419156809 : 1B966029EA6532DC | | 2017-10-14 | Oliver Kruse | C-PRP | M2494981/74849431/419156809 : 1B966029EA6532DC | | 2008-07-14 | George Woltman | F-ECM | Factor: 419156809 |
|
