| 5168707 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 58 / 280 |
Estimated T-Level: 21.0 ⓘ TF below 2^65 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Stephen Wood | 96B4F4A8183FA414 | 0 | Linux 32-bit,Prime95,v14,(aka WQ2) | | Factored | 2000-05-24 | Shawn Masters | 96B4F4A8183FA414 | 2150815 | Windows,Prime95,v18,NT service,(aka WU5) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-02-24 | cramsey87 | 849ED2B3538E76D1 | 1 | 3334161 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-02-25 | PrimeDirective | CERT | Proof certified good | | 2025-02-24 | cramsey87 | C-PRP | Proof Certified Good
Proof Power: 7
| | 2025-01-15 | Andrey Dobrynin | F-ECM | Factor: 3372036152629845682441417 / ECM curve 24, B1=50000, B2=88280115, Edwards Sigma=2562432391407426 | | 2024-10-10 | Andrew B | NF | no factor TF: 71-72 | | 2022-07-30 | Sid & Andy | NF-PM1 | B1=4000000, B2=10285831710 | | 2022-01-26 | mikr | NF | no factor TF: 70-71 | | 2022-01-17 | Gordon Spence | NF | no factor TF: 69-70 | | 2020-11-09 | TJAOI | NF | no factor TF: 68-69 | | 2020-09-16 | Dylan Delgado | NF-PM1 | B1=1000000, B2=22500000 | | 2018-06-20 | ramgeis | NF | no factor TF: 67-68 | | 2017-12-19 | Squeeky_Squirrel | NF-PM1 | B1=310000, B2=9222500, E=12 | | 2016-06-03 | Gordon Spence | NF | no factor TF: 66-67 | | 2016-02-23 | Mark Rose | NF | no factor TF: 1-62 | | 2015-08-09 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-12-17 | VictordeHollander | NF | no factor TF: 64-65 | | 2014-12-17 | VictordeHollander | NF | no factor TF: 63-64 | | 2009-10-01 | USAFSS | NF-PM1 | B1=60000, B2=975000, E=6 | | 2009-08-21 | Carsten Kossendey | NF-PM1 | B1=25000, B2=325000 | | 2009-06-24 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2000-05-24 | -anonymous- | C-LL | 96B4F4A8183FA414 |
|
