| 4305307 | 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 | 1998-07-21 | Alan Frederick | 6F389825D11C2154 | 0 | Windows,Prime95,v16,(aka WS1) | | Factored | 2000-02-01 | Andrew China | 6F389825D11C2154 | 2224386 | 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) | 2018-05-02 | King | E9B5302BD6A28432 | 1 | 3707242 | 5 | 3 | | Verified | PRP without proof (not generated) | 2018-05-03 | storm5510 | E9B5302BD6A28432 | 1 | 696404 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2024-08-17 | cramsey87 | NF-PM1 | B1=1400000, B2=1320754050 | | 2018-05-03 | storm5510 | C-PRP | M4305307/85989049373231035657 : E9B5302BD6A28432 | | 2018-05-02 | King | C-PRP | M4305307/85989049373231035657 : E9B5302BD6A28432 | | 2018-04-30 | chuenkit | F | Factor: 85989049373231035657 / TF: 66-67 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2015-06-14 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-05-13 | lycorn | NF | no factor TF: 64-65 | | 2014-05-09 | Jayder | NF | no factor TF: 63-64 | | 2013-08-22 | Squeeky_Squirrel | NF-PM1 | B1=130000, B2=2632500, E=6 | | 2012-01-08 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2011-08-29 | USAFSS | NF-PM1 | B1=50000, B2=775000, E=6 | | 2010-12-13 | markr | NF | no factor TF: 61-62 | | 2009-07-26 | Carsten Kossendey | NF-PM1 | B1=25000, B2=337500 | | 2000-02-01 | TeraTism | C-LL | 6F389825D11C2154 | | 1998-07-21 | -anonymous- | C-LL | 6F389825D11C2154 | | 1998-06-14 | -anonymous- | NF | no factor TF: 1-61 | | 1998-03-23 | -anonymous- | NF | no factor TF: 1-60 |
|
