| 15649783 | Composite: proven not-prime with Lucas-Lehmer test No factors below 274 TF target 269 |
| P-1 | | B1 = | 1500000 | | B2 = | 674465610 |
|
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 1 / 280 |
Estimated T-Level: 20.0 ⓘ TF below 2^61 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Verified | 2002-08-17 | Gavin Brock | F77AE64CDEE204E1 | 5111442 | Linux 32-bit,Prime95,v21,(aka WX2) | | Verified | 2003-08-08 | Jebediah Springfield | F77AE64CDEE204E1 | 333698 | Windows,Prime95,v23,(aka WZ1) |
|
| History | | Date | User | Type | Result |
|---|
| 2024-08-13 | Sid & Andy | NF-PM1 | B1=1500000, B2=674465610 | | 2022-04-09 | ZacHFX | NF | no factor TF: 73-74 | | 2022-04-02 | RichD0 | NF | no factor TF: 72-73 | | 2021-09-13 | -anonymous- | NF | no factor TF: 71-72 | | 2021-09-07 | SRBase | NF | no factor TF: 70-71 | | 2021-06-15 | lycorn | NF | no factor TF: 69-70 | | 2018-03-18 | ramgeis | NF | no factor TF: 68-69 | | 2018-03-18 | ramgeis | NF | no factor TF: 67-68 | | 2016-07-05 | Tha | NF-PM1 | B1=300000, B2=6000000, E=12 | | 2013-12-31 | Nesowa | NF | no factor TF: 66-67 | | 2013-09-11 | David Campeau | NF | no factor TF: 65-66 | | 2003-08-08 | -anonymous- | C-LL | F77AE64CDEE204E1 | | 2002-08-17 | Gavin Brock | C-LL | F77AE64CDEE204E1 | | 2002-05-18 | Gavin Brock | NF-PM1 | B1=235000, B2=235000 | | 2001-03-25 | curtisc | NF | no factor TF: 1-65 | | 2001-01-28 | Net_Force | NF | no factor TF: 1-58 |
|
