| 5397757 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 36 / 280 |
Estimated T-Level: 20.6 ⓘ TF below 2^64 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-09-20 | Peter Trebilcock | 0674C7494EAFA754 | 0 | Windows,Prime95,v16,(aka WS1) | | Factored | 2000-08-17 | texaport | 0674C7494EAFA754 | 5061823 | Windows,Prime95,v20,NT service,(aka WW5) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-19 | kutens | 58A7DCF17FABCC30 | 1 | 1967657 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-19 | segasai | CERT | Proof certified good | | 2025-03-19 | kutens | C-PRP | M5397757/743099244270327064810168663 : 58A7DCF17FABCC30 Proof Certified Good
Proof Power: 7
| | 2025-03-11 | fordobr | F-ECM | Factor: 743099244270327064810168663 / ECM curve 14, B1=50000, B2=64857975, Edwards Sigma=419440046119782 | | 2024-03-26 | kracker | NF | no factor TF: 71-72 | | 2022-09-08 | Sid & Andy | NF-PM1 | B1=4000000, B2=10285831710 | | 2022-03-02 | mikr | NF | no factor TF: 70-71 | | 2021-08-26 | TJAOI | NF | no factor TF: 69-70 | | 2019-09-26 | lycorn | NF | no factor TF: 68-69 | | 2019-07-23 | USAFSS | NF-PM1 | B1=325000, B2=9587500 | | 2018-06-11 | ramgeis | NF | no factor TF: 67-68 | | 2016-08-13 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-08-20 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-12-25 | VictordeHollander | NF | no factor TF: 64-65 | | 2014-12-25 | VictordeHollander | NF | no factor TF: 63-64 | | 2010-10-13 | Squeeky_Squirrel | NF-PM1 | B1=60000, B2=960000, E=6 | | 2009-05-16 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2000-08-17 | ANONYMOOS | C-LL | 0674C7494EAFA754 | | 2000-06-29 | ANONYMOOS | NF-PM1 | B1=25000, B2=306250 | | 2000-06-26 | ANONYMOOS | NF-PM1 | B1=25000, B2=306250 | | 1998-09-20 | -anonymous- | C-LL | 0674C7494EAFA754 | | 1998-03-17 | -anonymous- | NF | no factor TF: 1-62 |
|
