| 2278379 | Composite, with 3 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 262 |
| Factored | |
| P-1 factors | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 116 / 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 | BEEA91B1B11C03ED | 1 | 0 | 1 | 3 | | Verified | PRP without proof (not generated) | 2017-10-18 | Oliver Kruse | 8E370FBAE80B7FF7 | 3 | 611152 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-11-22 | storm5510 | 8E370FBAE80B7FF7 | 3 | 901308 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2017-11-22 | storm5510 | C-PRP | M2278379/4556759/65472305490167/220843557588157455641 : 8E370FBAE80B7FF7 | | 2017-10-18 | Oliver Kruse | C-PRP | M2278379/4556759/65472305490167/220843557588157455641 : 8E370FBAE80B7FF7 | | 2017-10-11 | Oliver Kruse | C-PRP | M2278379/known_factors : BEEA91B1B11C03ED | | 2016-04-08 | alpertron | F-PM1 | Factor: 220843557588157455641 / B1=500000, B2=15000000 | | 2008-09-07 | Will Edgington | F | Factor: 65472305490167 |
|
