| 2637163 | Composite, with 2 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 151 / 280 |
Estimated T-Level: 22.7 ⓘ TF below 2^70 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) | 2017-10-18 | Oliver Kruse | A45873DAC0092204 | 1 | 1116162 | 5 | 3 | | Factored | PRP without proof (not generated) | 2017-12-02 | storm5510 | A45873DAC0092204 | 1 | 2492605 | 5 | 3 | | Verified | Certified Good | 2025-07-04 | feather | A45873DAC0092204 | 2 | 799705 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-07-04 | Architects Cubed | CERT | Proof certified good | | 2025-07-04 | feather | C-PRP | M2637163/617096143/1452714773220716532896477873 : A45873DAC0092204 Proof Certified Good
Proof Power: 7
| | 2025-07-04 | feather | F-ECM | Factor: 1452714773220716532896477873 / ECM curve 11, B1=59670, B2=6742710, Edwards Sigma=2861526539187831 | | 2019-07-04 | alpertron | NF-PM1 | B1=2000000, B2=60000000, E=12 | | 2017-12-02 | storm5510 | C-PRP | M2637163/617096143 : A45873DAC0092204 | | 2017-10-18 | Oliver Kruse | C-PRP | M2637163/617096143 : A45873DAC0092204 |
|
