| 3752939 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 270 TF target 264 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 250 / 280 |
Estimated T-Level: 24.5 ⓘ TF below 2^76 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Thomas Johansson | A0D414AD57E66A53 | 0 | Windows,Prime95,v15,(aka WR1) | | Factored | 1999-12-15 | Laszlo Megyeri | A0D414AD57E66A53 | 1118126 | Linux 32-bit,Prime95,v19,(aka WV2) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-01-02 | fordobr | F54C1365073C3132 | 1 | 1703627 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-01-02 | Albert Pettersson | CERT | Proof certified good | | 2025-01-02 | fordobr | C-PRP | M3752939/22153785751361093319599041 : F54C1365073C3132 Proof Certified Good
Proof Power: 7
| | 2025-01-02 | fordobr | F-ECM | Factor: 22153785751361093319599041 / ECM curve 33, B1=100560, B2=275660385, Edwards Sigma=2037184401439192 | | 2023-05-31 | Sid & Andy | NF-PM1 | B1=8500000, B2=14323628550 | | 2023-02-12 | Joss | NF-PM1 | B1=1000000, B2=461556480 | | 2022-11-01 | Joss | NF-PM1 | B1=1000000, B2=130364850 | | 2021-03-23 | axn | NF | no factor TF: 69-70 | | 2020-12-07 | axn | NF | no factor TF: 68-69 | | 2019-02-04 | TJAOI | NF | no factor TF: 67-68 | | 2016-11-07 | Gordon Spence | NF | no factor TF: 66-67 | | 2016-02-28 | ramgeis | NF | no factor TF: 65-66 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2015-12-11 | mikr | NF-PM1 | B1=1600000, B2=66000000, E=12 | | 2015-01-25 | VictordeHollander | NF | no factor TF: 64-65 | | 2015-01-25 | VictordeHollander | NF | no factor TF: 63-64 | | 2013-03-17 | Squeeky_Squirrel | NF-PM1 | B1=110000, B2=2035000, E=6 | | 2012-05-10 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2011-04-28 | markr | NF | no factor TF: 1-62 | | 2009-07-07 | Carsten Kossendey | NF-PM1 | B1=20000, B2=265000 | | 2009-03-02 | S485122 | NF | no factor TF: 60-61 | | 2000-10-22 | irreally9002 | C-LL | A0D414AD57E66A53 | | 1999-12-15 | irreally9002 | C-LL | A0D414AD57E66A53 |
|
