| 2258573 | Composite, with 3 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 262 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 162 / 640 |
Estimated T-Level: 26.3 ⓘ TF below 2^82 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) | 2017-10-10 | Oliver Kruse | 86CA45852DC3B344 | 1 | 0 | 1 | 3 | | Verified | PRP without proof (not generated) | 2017-10-18 | Oliver Kruse | ED9F0CE4B78E5731 | 3 | 894694 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-11-21 | storm5510 | ED9F0CE4B78E5731 | 3 | 506518 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2017-11-21 | storm5510 | C-PRP | M2258573/49110411313/942634083811543/32704788466658953 : ED9F0CE4B78E5731 | | 2017-10-18 | Oliver Kruse | C-PRP | M2258573/49110411313/942634083811543/32704788466658953 : ED9F0CE4B78E5731 | | 2017-10-10 | Oliver Kruse | C-PRP | M2258573/known_factors : 86CA45852DC3B344 | | 2016-04-14 | alpertron | NF-PM1 | B1=500000, B2=15000000, E=12 | | 2014-12-19 | TJAOI | F | Factor: 32704788466658953 | | 2014-05-09 | TJAOI | F | Factor: 942634083811543 |
|
