| 5108057 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 265 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 38 / 280 |
Estimated T-Level: 20.7 ⓘ TF below 2^64 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-07-21 | Blaine Deal | 561B6013004D7F15 | 0 | Windows,Prime95,v16,NT service,(aka WS5) | | Factored | 2000-09-08 | Louis Towles | 561B6013004D7F15 | 4761903 | Windows,Prime95,v19,(aka WV1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-01-09 | PrimeNR | D08DDC2E4EDC2173 | 1 | 5087499 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-01-09 | CPU - 2 - BTU | CERT | Proof certified good | | 2025-01-09 | PrimeNR | C-PRP | Proof Certified Good
Proof Power: 7
| | 2025-01-03 | Andrey Dobrynin | F-ECM | Factor: 653313023799781193216262233 / ECM curve 18, B1=50000, B2=31130190, Edwards Sigma=6586415518261425 | | 2024-08-05 | Random GPUs | NF | no factor TF: 71-72 | | 2022-07-02 | Sid & Andy | NF-PM1 | B1=4000000, B2=10301320260 | | 2022-01-09 | mikr | NF | no factor TF: 70-71 | | 2020-12-15 | -anonymous- | NF | no factor TF: 69-70 | | 2020-12-08 | TJAOI | NF | no factor TF: 68-69 | | 2019-01-13 | King | NF-PM1 | B1=750000, B2=17500000 | | 2018-06-20 | ramgeis | NF | no factor TF: 67-68 | | 2016-05-15 | Gordon Spence | NF | no factor TF: 66-67 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2015-08-04 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-12-14 | VictordeHollander | NF | no factor TF: 64-65 | | 2014-12-14 | VictordeHollander | NF | no factor TF: 63-64 | | 2009-08-30 | USAFSS | NF-PM1 | B1=55000, B2=921250, E=6 | | 2009-07-27 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2008-12-29 | Sturle Sunde | NF | no factor TF: 61-62 | | 2000-09-08 | -anonymous- | C-LL | 561B6013004D7F15 | | 1998-07-21 | -anonymous- | C-LL | 561B6013004D7F15 | | 1998-05-23 | -anonymous- | NF | no factor TF: 1-61 |
|
