| 5453873 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 70 / 280 |
Estimated T-Level: 21.3 ⓘ TF below 2^66 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-09-27 | Fernando Aversa | 31523D50A1E402BD | 0 | Linux 32-bit,Prime95,v16,(aka WS2) | | Factored | 2000-08-10 | Göran Axelsson | 31523D50A1E402BD | 2113890 | Linux 32-bit,Prime95,v18,(aka WU2) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-24 | Jason Lynch | 07B0C5EAB46EABFE | 1 | 4058320 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-24 | tenethor | CERT | Proof certified good | | 2025-03-24 | Jason Lynch | C-PRP | M5453873/17085434667949478193179591 : 07B0C5EAB46EABFE Proof Certified Good
Proof Power: 7
| | 2025-03-17 | fordobr | F-ECM | Factor: 17085434667949478193179591 / ECM curve 32, B1=50000, B2=45039225, Edwards Sigma=4292924433142849 | | 2021-10-13 | axn | NF-PM1 | B1=8000000, B2=400000000 | | 2021-09-19 | SRBase | NF | no factor TF: 71-72 | | 2021-08-23 | SRBase | NF | no factor TF: 70-71 | | 2021-08-19 | SRBase | NF | no factor TF: 69-70 | | 2020-09-21 | TJAOI | NF | no factor TF: 68-69 | | 2019-09-03 | USAFSS | NF-PM1 | B1=330000, B2=9735000 | | 2018-06-29 | ramgeis | NF | no factor TF: 67-68 | | 2016-06-27 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-08-24 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-12-30 | monst | NF | no factor TF: 64-65 | | 2014-12-30 | snme2pm1 | NF | no factor TF: 63-64 | | 2010-11-03 | Squeeky_Squirrel | NF-PM1 | B1=60000, B2=960000, E=6 | | 2009-08-23 | Carsten Kossendey | NF-PM1 | B1=25000, B2=356250 | | 2009-05-09 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2008-09-13 | -anonymous- | NF-PM1 | B1=10000, B2=250000 | | 2000-08-10 | -anonymous- | C-LL | 31523D50A1E402BD | | 1998-09-27 | -anonymous- | C-LL | 31523D50A1E402BD | | 1998-06-20 | -anonymous- | NF | no factor TF: 1-62 |
|
