| 2591587 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 146 / 280 |
Estimated T-Level: 22.6 ⓘ TF below 2^70 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Jerry McKean | 1299AF7A7E4527A8 | 0 | Windows,Prime95,v14,(aka WQ1) | | Factored | 1999-04-13 | Hans Kesting | 1299AF7A7E4527A8 | 963526 | 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 | 2736A5126B960777 | 1 | 256291 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-12-02 | storm5510 | 2736A5126B960777 | 1 | 344076 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2023-01-28 | USAFSS | NF-PM1 | B1=360000, B2=322217280 | | 2022-03-11 | LordJulius | NF | no factor TF: 1-60 | | 2017-12-02 | storm5510 | C-PRP | M2591587/517685419867061388311953 : 2736A5126B960777 | | 2017-10-15 | Oliver Kruse | C-PRP | M2591587/517685419867061388311953 : 2736A5126B960777 | | 2014-06-19 | KAMCOBILL | F-ECM | Factor: 517685419867061388311953 | | 2013-01-14 | dbaugh | NF | no factor TF: 62-63 | | 2012-06-22 | Sebastian Hornbostel | NF | no factor TF: 61-62 | | 2011-02-22 | James Heinrich | NF-PM1 | B1=300000, B2=8000000, E=12 | | 2011-01-13 | Joss | NF-PM1 | B1=50000 | | 2010-11-15 | Joss | NF-PM1 | B1=20000 | | 2009-01-28 | Sturle Sunde | NF | no factor TF: 60-61 | | 2003-11-08 | Team Prime Rib | NF-PM1 | B1=15000, B2=206250 | | 2003-10-31 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 1999-04-13 | -anonymous- | C-LL | 1299AF7A7E4527A8 | | 1999-03-26 | -anonymous- | NF | no factor TF: 1-59 |
|
