| 4380553 | 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 | | Dax Prather | 12AB33F3E400C139 | 0 | Windows,Prime95,v14,(aka WQ1) | | Factored | 2000-02-09 | Joe Kaufman | 12AB33F3E400C139 | 935823 | Linux 32-bit,Prime95,v19,(aka WV2) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2018-05-03 | ATH | 1DF8C05BA9F6571C | 1 | 738051 | 5 | 3 | | Verified | PRP without proof (not generated) | 2018-05-06 | storm5510 | 1DF8C05BA9F6571C | 1 | 3838069 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2023-04-17 | Kevin_9611 | NF-PM1 | B1=330000, B2=234860340 | | 2018-05-06 | storm5510 | C-PRP | M4380553/104461511734413986903 : 1DF8C05BA9F6571C | | 2018-05-03 | ATH | C-PRP | M4380553/104461511734413986903 : 1DF8C05BA9F6571C | | 2018-05-03 | chuenkit | F | Factor: 104461511734413986903 / TF: 66-67 | | 2017-04-23 | Squeeky_Squirrel | NF-PM1 | B1=270000, B2=7897500, E=12 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2015-06-20 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-07-19 | lycorn | NF | no factor TF: 64-65 | | 2014-07-18 | Jayder | NF | no factor TF: 63-64 | | 2012-02-29 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2012-01-07 | Squeeky_Squirrel | NF-PM1 | B1=110000, B2=2255000, E=6 | | 2010-11-15 | markr | NF | no factor TF: 61-62 | | 2009-08-08 | Carsten Kossendey | NF-PM1 | B1=25000, B2=356250 | | 2002-02-03 | David Campeau | NF | no factor TF: 1-61 | | 2000-02-09 | sutekh137 | C-LL | 12AB33F3E400C139 |
|
