| 2496643 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 149 / 280 |
Estimated T-Level: 22.7 ⓘ TF below 2^70 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Lapo Luchini | 4D363017CF411314 | 0 | Windows,Prime95,v14,(aka WQ1) | | Factored | | john rheinstein | 4D363017CF411314 | 0 | Windows,Prime95,v14,(aka WQ1) | | Factored | 1999-05-23 | Michael B. Clark | 4D363017CF411314 | 1045468 | Windows,Prime95,v18,(aka WU1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2017-10-14 | Oliver Kruse | B39ACF9D686E8946 | 1 | 896193 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-11-30 | storm5510 | B39ACF9D686E8946 | 1 | 1950458 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2022-03-10 | LordJulius | NF | no factor TF: 1-60 | | 2019-07-04 | alpertron | NF-PM1 | B1=2000000, B2=60000000, E=12 | | 2017-11-30 | storm5510 | C-PRP | M2496643/5854334687354498162831797921 : B39ACF9D686E8946 | | 2017-10-14 | Oliver Kruse | C-PRP | M2496643/5854334687354498162831797921 : B39ACF9D686E8946 | | 2009-02-20 | Carsten Kossendey | F-ECM | Factor: 5854334687354498162831797921 | | 2009-01-11 | Sturle Sunde | NF | no factor TF: 60-61 | | 2003-10-31 | Team Prime Rib | NF-PM1 | B1=15000, B2=228750 | | 2003-10-23 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 1999-05-23 | planetmike | C-LL | 4D363017CF411314 | | 1999-05-02 | planetmike | NF | no factor TF: 1-59 |
|
