| 3842369 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 270 TF target 264 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 156 / 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 | | Kim Johansson | A8A3B89ECAE7A289 | 0 | Windows,Prime95,v15,(aka WR1) | | Factored | 2000-02-01 | Thomas Honold | A8A3B89ECAE7A289 | 2855153 | Linux 32-bit,Prime95,v19,(aka WV2) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-13 | Ruslan Borisov | 4C5414F58868C1F8 | 1 | 335109 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-13 | Zitong Zhang | CERT | Proof certified good | | 2025-03-13 | Ruslan Borisov | C-PRP | M3842369/376156246152077489326817399 : 4C5414F58868C1F8 Proof Certified Good
Proof Power: 7
| | 2025-03-13 | Ruslan Borisov | F-ECM | Factor: 376156246152077489326817399 / ECM curve 11, B1=110085, B2=117709515, Edwards Sigma=2391451969206505 | | 2025-02-18 | Joss | NF-PM1 | B1=11576310, B2=20295835560 | | 2025-02-17 | Joss | NF-PM1 | B1=11576310, B2=10125046470 | | 2024-04-13 | Joss | NF-PM1 | B1=10000000, B2=10002782790 | | 2023-12-14 | Joss | NF-PM1 | B1=2323593, B2=2389066680 | | 2022-05-15 | DRobinsonPE | NF | no factor TF: 69-70 | | 2021-02-05 | axn | NF-PM1 | B1=15000000, B2=750000000 | | 2020-11-22 | Carlos Pinho | NF-PM1 | B1=173000, B2=4671000 | | 2020-11-16 | TJAOI | NF | no factor TF: 68-69 | | 2018-09-03 | TJAOI | NF | no factor TF: 67-68 | | 2016-11-21 | 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 | | 2016-02-05 | Joss | NF-PM1 | B1=239500, B2=2395000, E=6 | | 2015-01-18 | VictordeHollander | NF | no factor TF: 64-65 | | 2015-01-18 | VictordeHollander | NF | no factor TF: 63-64 | | 2014-10-17 | Joss | NF-PM1 | B1=86704 | | 2012-02-20 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2011-10-26 | Squeeky_Squirrel | NF-PM1 | B1=70000, B2=1137500, E=6 | | 2011-03-08 | markr | NF | no factor TF: 61-62 | | 2009-07-27 | Carsten Kossendey | NF-PM1 | B1=20000, B2=270000 | | 2009-02-27 | S485122 | NF | no factor TF: 60-61 | | 2000-02-01 | -anonymous- | C-LL | A8A3B89ECAE7A289 | | 1998-06-28 | -anonymous- | C-LL | A8A3B89ECAE7A289 | | 1998-06-20 | -anonymous- | NF | no factor TF: 1-60 |
|
