| 2338627 | Composite, with 2 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 262 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 125 / 640 |
Estimated T-Level: 26.0 ⓘ 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) | 2017-10-12 | Oliver Kruse | 72152389DDB03263 | 1 | 0 | 1 | 3 | | Factored | PRP without proof (not generated) | 2017-11-23 | storm5510 | 72152389DDB03263 | 1 | 1826805 | 1 | 3 | | Verified | Certified Good | 2025-03-05 | feather | 699D3BCB14DFDF34 | 2 | 2036597 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-05 | LuisMx | CERT | Proof certified good | | 2025-03-05 | feather | C-PRP | M2338627/3741803201/2007381318201276031191913 : 699D3BCB14DFDF34 Proof Certified Good
Proof Power: 7
| | 2025-03-05 | feather | F-ECM | Factor: 2007381318201276031191913 / ECM curve 38, B1=78271, B2=15566460, Edwards Sigma=4923973305180216 | | 2021-04-18 | ViliamF | NF-PM1 | B1=5000000, B2=505000000 | | 2018-03-18 | alpertron | NF-PM1 | B1=500000, B2=15000000, E=12 | | 2017-11-23 | storm5510 | C-PRP | M2338627/3741803201 : 72152389DDB03263 | | 2017-10-12 | Oliver Kruse | C-PRP | M2338627/3741803201 : 72152389DDB03263 |
|
