| 1825333 | Composite, with 3 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 261 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 106 / 640 |
Estimated T-Level: 25.8 ⓘ TF below 2^81 is very unlikely to find new factors due to ECM effort. |
| PRP | | Status | Proof | Date | User | Residue | Shift | Type | Base |
|---|
| Factored | Certified Good Power=6 | 2025-09-02 | Kriesel | 915072BA0652E749 | 0 | 1 | 3 |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2017-11-21 | kkmrkkblmbrbk | 915072BA0652E749 | 3 | 1198199 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-11-21 | storm5510 | 915072BA0652E749 | 3 | 1226077 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-09-03 | kkmrkkblmbrbk | CERT | Proof certified good | | 2025-09-02 | Kriesel | C-PRP | 915072BA0652E749 Proof Certified Good
Proof Power: 6
| | 2017-11-21 | storm5510 | C-PRP | M1825333/2026119631/5603772311/32625265454422513 : 915072BA0652E749 | | 2017-11-21 | kkmrkkblmbrbk | C-PRP | M1825333/2026119631/32625265454422513/5603772311 : 915072BA0652E749 | | 2016-03-16 | alpertron | NF-PM1 | B1=500000, B2=15000000, E=12 | | 2014-12-19 | TJAOI | F | Factor: 32625265454422513 | | 2008-07-15 | J Feitsma | F | Factor: 5603772311 |
|
