| 2493221 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 216 / 280 |
Estimated T-Level: 23.9 ⓘ TF below 2^74 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Peter Joachim | 2D39C6C58F10FA99 | 0 | Windows 16-bit,Prime95,v14,(aka WQ0) | | Factored | 1999-05-23 | eleftherios argyropoulos | 2D39C6C58F10FA99 | 179739 | 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) | 2017-10-14 | Oliver Kruse | 8B468FB55A0DF012 | 1 | 1707364 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-11-30 | storm5510 | 8B468FB55A0DF012 | 1 | 598741 | 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 | | 2017-11-30 | storm5510 | C-PRP | M2493221/36270276126456778033 : 8B468FB55A0DF012 | | 2017-10-14 | Oliver Kruse | C-PRP | M2493221/36270276126456778033 : 8B468FB55A0DF012 | | 2012-07-06 | soldcake | F-ECM | Factor: 36270276126456778033 | | 2012-06-11 | Sebastian Hornbostel | NF | no factor TF: 61-62 | | 2011-01-24 | Oscar Östlin | NF-PM1 | B1=95000, B2=1971250, E=6 | | 2010-12-22 | Joss | NF-PM1 | B1=20000 | | 2009-01-11 | Sturle Sunde | NF | no factor TF: 60-61 | | 2003-10-31 | Team Prime Rib | NF-PM1 | B1=15000, B2=228750 | | 2003-10-23 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 1999-05-23 | -anonymous- | C-LL | 2D39C6C58F10FA99 | | 1999-05-02 | -anonymous- | NF | no factor TF: 1-59 |
|
