| 2472181 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 167 / 280 |
Estimated T-Level: 23.0 ⓘ TF below 2^71 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Dax Prather | 8F95C549E1D2DBA4 | 0 | Windows,Prime95,v14,(aka WQ1) | | Factored | | Alex and Nick Myrman | 2DBA5 | 0 | Nick Myrman,DWT,(aka N2) | | Factored | 1998-07-05 | Tom Cage | 8F95C549E1D2DBA4 | 0 | Windows,Prime95,v14,(aka WQ1) |
|
| 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 | 4F77E8C46049B315 | 1 | 20475 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-11-29 | storm5510 | 4F77E8C46049B315 | 1 | 1633730 | 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 | | 2017-11-29 | storm5510 | C-PRP | M2472181/26421730870904195927 : 4F77E8C46049B315 | | 2017-10-14 | Oliver Kruse | C-PRP | M2472181/26421730870904195927 : 4F77E8C46049B315 | | 2015-03-03 | VictordeHollander | F | Factor: 26421730870904195927 / TF: 64-65 | | 2015-03-03 | VictordeHollander | NF | no factor TF: 63-64 | | 2013-10-24 | David Campeau | NF-PM1 | B1=590000, B2=15930000, E=12 | | 2013-01-23 | dbaugh | NF | no factor TF: 62-63 | | 2012-08-03 | Grant McCracken | NF | no factor TF: 61-62 | | 2010-12-05 | Joss | NF-PM1 | B1=247218 | | 2009-01-15 | Sturle Sunde | NF | no factor TF: 60-61 | | 2003-02-24 | -anonymous- | NF-PM1 | B1=4096, B2=409600, E=12 | | 2003-02-09 | -anonymous- | NF-PM1 | B1=2048, B2=204800, E=12 | | 1999-08-16 | -anonymous- | NF | no factor TF: 1-59 | | 1998-07-05 | -anonymous- | C-LL | 8F95C549E1D2DBA4 |
|
