| 2272631 | 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 | 153 / 640 |
Estimated T-Level: 26.2 ⓘ TF below 2^82 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Wayne Scott | CD4ECB6181E64BC3 | 0 | Linux 32-bit,Prime95,v13,(aka WP2) | | Bad | 1999-03-01 | Jeff Cambron | EE32741F9DF6024D | 1969801 | Windows,Prime95,v17,(aka WT1) | | Factored | 1999-07-27 | Stephen Wood | CD4ECB6181E64BC3 | 1948619 | Linux 32-bit,Prime95,v18,(aka WU2) |
|
| 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 | AE93299848B1D730 | 1 | 0 | 1 | 3 | | Verified | PRP without proof (not generated) | 2017-11-21 | storm5510 | AE93299848B1D730 | 1 | 1449595 | 1 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2017-11-21 | storm5510 | C-PRP | M2272631/125101600911338285903 : AE93299848B1D730 | | 2017-10-11 | Oliver Kruse | C-PRP | M2272631/125101600911338285903 : AE93299848B1D730 | | 2016-04-29 | alpertron | NF-PM1 | B1=500000, B2=15000000, E=12 | | 2010-01-02 | KAMCOBILL | F-ECM | Factor: 125101600911338285903 | | 2009-01-10 | Sturle Sunde | NF | no factor TF: 60-61 | | 2003-04-27 | -anonymous- | NF-PM1 | B1=2048, B2=204800, E=12 | | 1999-10-15 | -anonymous- | C-LL | EE32741F9DF6024D | | 1999-07-27 | Stephen Wood | C-LL | CD4ECB6181E64BC3 | | 1999-03-01 | -anonymous- | C-LL | EE32741F9DF6024D |
|
