| 2609081 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 85 / 280 |
Estimated T-Level: 21.5 ⓘ TF below 2^66 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1997-11-12 | Chad Davis | 5A7432A47DA37221 | 0 | Windows,Prime95,v14,(aka WQ1) | | Factored | 1999-05-09 | Jud McCranie | 5A7432A47DA37221 | 1453084 | 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) | 2017-10-15 | Oliver Kruse | DF77CA28932141AA | 1 | 2496073 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-12-02 | storm5510 | DF77CA28932141AA | 1 | 394036 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2022-03-11 | LordJulius | NF | no factor TF: 1-60 | | 2019-07-04 | alpertron | NF-PM1 | B1=2000000, B2=60000000, E=12 | | 2017-12-02 | storm5510 | C-PRP | M2609081/4092936530807389273 : DF77CA28932141AA | | 2017-10-15 | Oliver Kruse | C-PRP | M2609081/4092936530807389273 : DF77CA28932141AA | | 2012-06-30 | Grant McCracken | F | Factor: 4092936530807389273 | | 2010-12-15 | markr | NF-PM1 | B1=100000, B2=2125000, E=6 | | 2010-11-17 | Joss | NF-PM1 | B1=20000 | | 2009-01-31 | Sturle Sunde | NF | no factor TF: 60-61 | | 2003-11-08 | Team Prime Rib | NF-PM1 | B1=15000, B2=217500 | | 2003-10-31 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 1999-05-09 | Jud McCranie | C-LL | 5A7432A47DA37221 | | 1999-04-02 | Jud McCranie | NF | no factor TF: 1-59 | | 1997-11-12 | -anonymous- | C-LL | 5A7432A47DA37221 |
|
