| 2499821 | Composite, with 2 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 179 / 280 |
Estimated T-Level: 23.2 ⓘ TF below 2^72 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Paul Foxworthy | 14706D02B123D916 | 0 | Windows,Prime95,v14,(aka WQ1) | | Factored | 1999-05-02 | 2503000 | 14706D02B123D916 | 1060246 | 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 | 6E9FB62A3F1B8497 | 2 | 518181 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-11-30 | storm5510 | 6E9FB62A3F1B8497 | 2 | 1492413 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2019-07-04 | alpertron | NF-PM1 | B1=2000000, B2=60000000, E=12 | | 2017-11-30 | storm5510 | C-PRP | M2499821/3167568185879/121732160929365544081 : 6E9FB62A3F1B8497 | | 2017-10-14 | Oliver Kruse | C-PRP | M2499821/3167568185879/121732160929365544081 : 6E9FB62A3F1B8497 | | 2008-09-07 | Will Edgington | F-ECM | Factor: 121732160929365544081 | | 2003-10-31 | Team Prime Rib | F-PM1 | Factor: 121732160929365544081 | | 2003-10-23 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 1999-12-01 | -anonymous- | C-LL | 14706D02B123D916 | | 1999-12-01 | -anonymous- | NF | no factor TF: 1-59 | | 1999-11-24 | -anonymous- | C-LL | 14706D02B123D916 | | 1999-11-24 | -anonymous- | NF | no factor TF: 1-59 | | 1999-05-02 | -anonymous- | C-LL | 14706D02B123D916 | | 1999-05-02 | -anonymous- | NF | no factor TF: 1-59 |
|
