| 2425469 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 154 / 280 |
Estimated T-Level: 22.8 ⓘ TF below 2^71 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Philip Sharman | 2445E9C23C410EA9 | 0 | Windows,Prime95,v13,(aka WP1) | | Factored | 1999-03-26 | Michael G. Mshar | 2445E9C23C410EA9 | 331143 | Windows,Prime95,v17,(aka WT1) | | Factored | 2018-05-20 | kkmrkkblmbrbk | 2445E9C23C410EA9 | 2074496 | Windows 64-bit,Prime95,v29.4,build 5 |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2020-08-13 | storm5510 | 5C61653D4789B343 | 1 | 833853 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2020-08-13 | Ryan Propper | CERT | Proof certified good | | 2020-08-13 | storm5510 | C-PRP | M2425469/2500649338032609775391 : 5C61653D4789B343 Proof Certified Good
Proof Power: 7
| | 2020-08-13 | GAN | F-ECM | Factor: 2500649338032609775391 / ECM curve 3, B1=50000, B2=5000000, Montgomery Sigma=6480400228255344 | | 2019-04-22 | TJAOI | NF | no factor TF: 67-68 | | 2018-05-20 | kkmrkkblmbrbk | C-LL | 2445E9C23C410EA9 | | 2017-07-05 | Gordon Spence | NF | no factor TF: 66-67 | | 2016-02-23 | Mark Rose | NF | no factor TF: 59-60 | | 2015-10-23 | ramgeis | NF | no factor TF: 65-66 | | 2015-02-27 | VictordeHollander | NF | no factor TF: 64-65 | | 2015-02-27 | VictordeHollander | NF | no factor TF: 63-64 | | 2014-04-22 | mikr | NF-PM1 | B1=1986400, B2=69524000, E=12 | | 2013-12-04 | Jerry Hallett | NF | no factor TF: 62-63 | | 2012-06-05 | Sebastian Hornbostel | NF | no factor TF: 61-62 | | 2011-01-23 | Oscar Östlin | NF-PM1 | B1=95000, B2=1923750, E=6 | | 2010-11-26 | Oscar Östlin | NF-PM1 | B1=75011 | | 2010-11-10 | Joss | NF-PM1 | B1=15000 | | 2009-01-16 | Sturle Sunde | NF | no factor TF: 60-61 | | 2003-10-08 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 1999-03-26 | -anonymous- | C-LL | 2445E9C23C410EA9 | | 1999-03-15 | -anonymous- | NF | no factor TF: 1-59 |
|
