| 2315263 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 262 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 120 / 640 |
Estimated T-Level: 25.9 ⓘ TF below 2^81 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | David Fred | 739C153323A33A8C | 0 | Linux 32-bit,Prime95,v14,(aka WQ2) | | Factored | 1999-03-15 | Frans Dogge | 739C153323A33A8C | 804890 | Windows,Prime95,v17,(aka WT1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2017-10-11 | Oliver Kruse | 648E53F5519DA1D9 | 1 | 0 | 1 | 3 | | Verified | PRP without proof (not generated) | 2017-11-23 | storm5510 | 648E53F5519DA1D9 | 1 | 1610649 | 1 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2021-05-07 | ViliamF | NF-PM1 | B1=5000000, B2=505000000 | | 2018-02-26 | alpertron | NF-PM1 | B1=500000, B2=15000000, E=12 | | 2017-11-23 | storm5510 | C-PRP | M2315263/144916611685116981649 : 648E53F5519DA1D9 | | 2017-10-11 | Oliver Kruse | C-PRP | M2315263/144916611685116981649 : 648E53F5519DA1D9 | | 2013-10-06 | arnaud | F-ECM | Factor: 144916611685116981649 | | 2013-01-23 | dbaugh | NF | no factor TF: 62-63 | | 2012-05-24 | Sebastian Hornbostel | NF | no factor TF: 61-62 | | 2010-02-16 | Bud | NF-PM1 | B1=500000, B2=10000000, E=12 | | 2009-01-17 | Sturle Sunde | NF | no factor TF: 60-61 | | 2003-09-14 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 1999-03-15 | -anonymous- | C-LL | 739C153323A33A8C |
|
