| 1830931 | Composite, with 2 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 261 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 107 / 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 | F64EA53217B8A137 | 0 | 1 | 3 |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Factored | PRP without proof (not generated) | 2017-10-04 | Oliver Kruse | 3E6D70E7E84894CA | 1 | 0 | 1 | 3 | | Factored | PRP without proof (not generated) | 2017-11-06 | kkmrkkblmbrbk | 3E6D70E7E84894CA | 1 | 728792 | 1 | 3 | | Verified | Certified Good | 2020-08-11 | storm5510 | F64EA53217B8A137 | 2 | 84482 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-09-03 | Poao | CERT | Proof certified good | | 2025-09-02 | Kriesel | C-PRP | F64EA53217B8A137 Proof Certified Good
Proof Power: 6
| | 2020-08-12 | Jorge Coveiro | CERT | Proof certified good | | 2020-08-11 | storm5510 | C-PRP | M1830931/23763290924663/42677833477679098748999 : F64EA53217B8A137 Proof Certified Good
Proof Power: 7
| | 2020-08-11 | _p95holder_ | F-ECM | Factor: 42677833477679098748999 | | 2017-11-06 | kkmrkkblmbrbk | C-PRP | M1830931/23763290924663 : 3E6D70E7E84894CA | | 2017-10-04 | Oliver Kruse | C-PRP | M1830931/23763290924663 : 3E6D70E7E84894CA | | 2016-03-16 | alpertron | NF-PM1 | B1=500000, B2=15000000, E=12 |
|
