| 7812601 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 267 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 3 / 280 |
Estimated T-Level: 20.1 ⓘ TF below 2^62 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1999-07-30 | Gregory Becker | 53B5EE1F3B7AA389 | 5470797 | Windows,Prime95,v18,(aka WU1) | | Factored | 2002-07-14 | John Carlson | 53B5EE1F3B7AA389 | 415662 | Windows,Prime95,v21,(aka WX1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2018-05-15 | storm5510 | 67EAFCC3EADCB797 | 1 | 972150 | 5 | 3 | | Verified | PRP without proof (not generated) | 2019-10-12 | marssystems | 67EAFCC3EADCB797 | 1 | 5449014 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-05-08 | Stef42 | NF-PM1 | B1=2050000, B2=2616049800 | | 2019-10-12 | marssystems | C-PRP | M7812601/91255980849693719377 : 67EAFCC3EADCB797 | | 2018-05-15 | storm5510 | C-PRP | M7812601/91255980849693719377 : 67EAFCC3EADCB797 | | 2016-08-24 | Gordon Spence | F | Factor: 91255980849693719377 / TF: 66-67 | | 2015-06-09 | VictordeHollander | NF | no factor TF: 65-66 | | 2013-10-11 | David Campeau | NF | no factor TF: 64-65 | | 2013-10-04 | Nesowa | NF | no factor TF: 63-64 | | 2012-09-02 | Nesowa | NF-PM1 | B1=95000, B2=1876250, E=6 | | 2002-07-14 | -anonymous- | C-LL | 53B5EE1F3B7AA389 | | 2002-05-05 | -anonymous- | NF-PM1 | B1=40000, B2=420000 | | 1999-07-30 | -anonymous- | C-LL | 53B5EE1F3B7AA389 | | 1998-10-25 | -anonymous- | NF | no factor TF: 1-63 | | 1998-08-02 | -anonymous- | NF | no factor TF: 1-61 |
|
