| 7835651 | Composite: proven not-prime with Lucas-Lehmer test No factors below 273 TF target 267 |
| P-1 | | B1 = | 2800000 | | B2 = | 2038723050 |
|
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 6 / 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 |
|---|
| Verified | | Niclas Borlin | C666E3B3BD35B03D | 0 | Mlucas,Ernst Mayer,v2.5 and later,(aka E2) | | Verified | 1999-11-04 | Alan Vidmar | C666E3B3BD35B03D | 0 | Windows,Prime95,v19,NT service,(aka WV5) | | Verified | 2015-05-05 | MadPoo 🙂 | C666E3B3BD35B03D | 1525767 | Windows 64-bit,Prime95,v26,(aka We4) |
|
| History | | Date | User | Type | Result |
|---|
| 2022-12-19 | yoyorocks1 | NF-PM1 | B1=2800000, B2=2038723050 | | 2022-04-03 | Sid & Andy | NF | no factor TF: 72-73 | | 2021-10-14 | Architects Cubed | NF-PM1 | B1=399000, B2=23020000 | | 2021-10-13 | SRBase | NF | no factor TF: 71-72 | | 2021-09-02 | SRBase | NF | no factor TF: 70-71 | | 2021-08-19 | SRBase | NF | no factor TF: 69-70 | | 2020-02-14 | TJAOI | NF | no factor TF: 68-69 | | 2018-08-05 | ramgeis | NF | no factor TF: 67-68 | | 2016-08-26 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-06-09 | VictordeHollander | NF | no factor TF: 65-66 | | 2015-05-05 | MadPoo 🙂 | C-LL | C666E3B3BD35B03D | | 2013-12-15 | David Campeau | NF | no factor TF: 64-65 | | 2013-10-04 | Nesowa | NF | no factor TF: 63-64 | | 2012-10-04 | Nesowa | NF-PM1 | B1=100000, B2=1900000, E=6 | | 2009-08-13 | Carsten Kossendey | NF-PM1 | B1=45000, B2=697500, E=6 | | 1999-11-04 | vidmar | C-LL | C666E3B3BD35B03D | | 1998-12-13 | Mike Curtis | NF | no factor TF: 1-63 | | 1998-08-09 | -anonymous- | NF | no factor TF: 1-62 |
|
