| 2288509 | 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 | 145 / 640 |
Estimated T-Level: 26.1 ⓘ 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) | 2017-10-11 | Oliver Kruse | 2652B2B1D53EE39F | 2 | 0 | 1 | 3 | | Factored | PRP without proof (not generated) | 2017-11-22 | kkmrkkblmbrbk | 2652B2B1D53EE39F | 2 | 1542296 | 1 | 3 | | Verified | Certified Good | 2025-03-23 | Daniil Tsarkov | 0C3FCB6499457C67 | 3 | 167715 | 5 | 3 | | Verified | Certified Good | 2025-03-25 | Daniil Tsarkov | 0C3FCB6499457C67 | 3 | 362234 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-25 | garo | CERT | Proof certified good | | 2025-03-25 | Daniil Tsarkov | C-PRP | M2288509/11254887263/122231121597566713/818061226646650908521 : 0C3FCB6499457C67 Proof Certified Good
Proof Power: 7
| | 2025-03-23 | carel van der westhuizen | CERT | Proof certified good | | 2025-03-23 | Daniil Tsarkov | C-PRP | M2288509/11254887263/122231121597566713/818061226646650908521 : 0C3FCB6499457C67 Proof Certified Good
Proof Power: 7
| | 2025-03-23 | Daniil Tsarkov | F-ECM | Factor: 818061226646650908521 / ECM curve 5, B1=84452, B2=117709515, Edwards Sigma=2568940891231424 | | 2017-11-22 | kkmrkkblmbrbk | C-PRP | M2288509/11254887263/122231121597566713 : 2652B2B1D53EE39F | | 2017-10-11 | Oliver Kruse | C-PRP | M2288509/11254887263/122231121597566713 : 2652B2B1D53EE39F | | 2016-04-19 | alpertron | NF-PM1 | B1=500000, B2=15000000, E=12 | | 2015-04-29 | TJAOI | F | Factor: 122231121597566713 |
|
