| 5253529 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 266 |
| Factored | |
| P-1 factors | | Date | Factors | B1 | B2 |
|---|
| 2025-02-12 | No new factors discovered | 14331000 | 236501295030 |
|
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 154 / 280 |
Estimated T-Level: 22.8 ⓘ TF below 2^71 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-03-03 | Michael Seow | 53E98CED5ACCB42F | 0 | Windows,Prime95,v14,(aka WQ1) | | Factored | 2000-07-25 | Emil W. Kiss | 53E98CED5ACCB42F | 481037 | Linux 32-bit,Prime95,v19,(aka WV2) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-02-12 | Jason Lynch | F5EA15AA3A289286 | 1 | 928420 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-02-12 | SmithMichae2 | CERT | Proof certified good | | 2025-02-12 | Jason Lynch | C-PRP | M5253529/74836755866528559754017647 : F5EA15AA3A289286 Proof Certified Good
Proof Power: 7
| | 2025-02-12 | Jason Lynch | F-PM1 | Factor: 74836755866528559754017647 / B1=14331000, B2=236501295030 | | 2025-02-09 | Ruslan Borisov | F-ECM | Factor: 74836755866528559754017647 / ECM curve 83, B1=50000, B2=45039225, Edwards Sigma=1635858696736377 | | 2021-09-23 | axn | NF-PM1 | B1=8000000, B2=400000000 | | 2021-09-19 | SRBase | NF | no factor TF: 71-72 | | 2021-08-22 | SRBase | NF | no factor TF: 70-71 | | 2021-08-19 | SRBase | NF | no factor TF: 69-70 | | 2020-12-21 | TJAOI | NF | no factor TF: 68-69 | | 2019-05-28 | USAFSS | NF-PM1 | B1=315000, B2=9922500 | | 2018-06-17 | ramgeis | NF | no factor TF: 67-68 | | 2016-06-03 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-08-12 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-12-22 | VictordeHollander | NF | no factor TF: 64-65 | | 2014-12-22 | VictordeHollander | NF | no factor TF: 63-64 | | 2010-07-11 | Squeeky_Squirrel | NF-PM1 | B1=60000, B2=975000, E=6 | | 2009-08-24 | Carsten Kossendey | NF-PM1 | B1=25000, B2=337500 | | 2009-06-09 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2002-10-19 | David Campeau | NF | no factor TF: 1-62 | | 2000-07-25 | -anonymous- | C-LL | 53E98CED5ACCB42F | | 1998-04-21 | -anonymous- | NF | no factor TF: 1-61 | | 1998-03-03 | -anonymous- | C-LL | 53E98CED5ACCB42F | | 1998-03-03 | -anonymous- | NF | no factor TF: 1-61 |
|
