| 4915279 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 265 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 9 / 280 |
Estimated T-Level: 20.2 ⓘ TF below 2^62 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-06-28 | Alan Roy | BBE4BF2703E85D9C | 0 | Windows,Prime95,v16,(aka WS1) | | Factored | 2000-04-12 | Anna Buraczyńska | BBE4BF2703E85D9C | 3196562 | Windows,Prime95,v19,(aka WV1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2018-05-24 | storm5510 | 59504A4C61818DD7 | 1 | 1907813 | 5 | 3 | | Verified | PRP without proof (not generated) | 2018-05-28 | Oliver Kruse | 59504A4C61818DD7 | 1 | 4447288 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2018-05-28 | Oliver Kruse | C-PRP | M4915279/223968553193057367641 : 59504A4C61818DD7 | | 2018-05-24 | storm5510 | C-PRP | M4915279/223968553193057367641 : 59504A4C61818DD7 | | 2018-05-23 | ramgeis | F | Factor: 223968553193057367641 / TF: 67-68* | | 2017-10-28 | Yxinity | NF | no factor TF: 66-67 | | 2016-02-23 | Mark Rose | NF | no factor TF: 1-61 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2015-07-25 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-12-29 | VictordeHollander | NF | no factor TF: 64-65 | | 2014-12-29 | VictordeHollander | NF | no factor TF: 63-64 | | 2014-10-05 | mikr | NF-PM1 | B1=1200000, B2=39750000, E=12 | | 2011-09-11 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2011-07-13 | Squeeky_Squirrel | NF-PM1 | B1=60000, B2=960000, E=6 | | 2010-04-04 | markr | NF | no factor TF: 61-62 | | 2009-08-27 | Carsten Kossendey | NF-PM1 | B1=30000, B2=435000 | | 2000-04-12 | -anonymous- | C-LL | BBE4BF2703E85D9C | | 1998-06-28 | -anonymous- | C-LL | BBE4BF2703E85D9C |
|
