| 2495557 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| P-1 factors | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 111 / 280 |
Estimated T-Level: 22.0 ⓘ TF below 2^68 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Martin Buck | 4D018DF04CD40996 | 0 | Windows,Prime95,v14,(aka WQ1) | | Factored | 1999-05-09 | Andrew Haveland-Robinson | 4D018DF04CD40996 | 2158634 | 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 | 8D65424424ADEA52 | 1 | 2305892 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-11-30 | storm5510 | 8D65424424ADEA52 | 1 | 1192253 | 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 | M2495557/124134659567506684751 : 8D65424424ADEA52 | | 2017-10-14 | Oliver Kruse | C-PRP | M2495557/124134659567506684751 : 8D65424424ADEA52 | | 2014-12-08 | mikr | F-PM1 | Factor: 124134659567506684751 / B1=2382500 | | 2014-09-10 | Joss | NF-PM1 | B1=120719 | | 2013-01-14 | dbaugh | NF | no factor TF: 62-63 | | 2012-06-11 | Sebastian Hornbostel | NF | no factor TF: 61-62 | | 2011-01-25 | Oscar Östlin | NF-PM1 | B1=95000, B2=1971250, E=6 | | 2010-12-22 | Joss | NF-PM1 | B1=20000 | | 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 | | 1999-05-09 | -anonymous- | C-LL | 4D018DF04CD40996 | | 1999-05-02 | -anonymous- | NF | no factor TF: 1-59 |
|
