| 3938609 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 271 TF target 264 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 119 / 280 |
Estimated T-Level: 22.1 ⓘ TF below 2^68 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-01-27 | Mark Reid | FE1273012311367C | 0 | Windows,Prime95,v15,(aka WR1) | | Factored | 1999-09-22 | Jeff Rennert | FE1273012311367C | 3045630 | Windows,Prime95,v17,NT service,(aka WT5) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-08 | fordobr | A634AFB6C3440B55 | 1 | 2633507 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-08 | yakman | CERT | Proof certified good | | 2025-03-08 | fordobr | C-PRP | M3938609/9721064174707986101085769 : A634AFB6C3440B55 Proof Certified Good
Proof Power: 7
| | 2025-03-08 | fordobr | F-ECM | Factor: 9721064174707986101085769 / ECM curve 4, B1=102489, B2=211882125, Edwards Sigma=6305427804130072 | | 2025-02-25 | Joss | NF-PM1 | B1=10000000, B2=20376886530 | | 2025-02-22 | Joss | NF-PM1 | B1=10000000, B2=10206085890 | | 2023-07-02 | Sid & Andy | NF-PM1 | B1=5200000, B2=16199353170 | | 2022-12-19 | Joss | NF-PM1 | B1=1000000, B2=474539520 | | 2022-10-30 | Joss | NF-PM1 | B1=1000000, B2=119860650 | | 2022-05-13 | Joss | NF-PM1 | B1=500000, B2=119860650 | | 2021-06-03 | -anonymous- | NF | no factor TF: 70-71 | | 2021-04-28 | axn | NF | no factor TF: 69-70 | | 2020-04-24 | TJAOI | NF | no factor TF: 68-69 | | 2019-01-07 | TJAOI | NF | no factor TF: 67-68 | | 2019-01-07 | Yxinity | NF | no factor TF: 67-68 | | 2017-07-10 | Joss | NF-PM1 | B1=380160, B2=3801600, E=6 | | 2016-12-11 | Gordon Spence | NF | no factor TF: 66-67 | | 2016-05-02 | Joss | NF-PM1 | B1=190080, B2=3421440 | | 2016-04-29 | Joss | NF-PM1 | B1=190080, B2=2992006, E=6 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2016-02-14 | ramgeis | NF | no factor TF: 65-66 | | 2015-01-14 | VictordeHollander | NF | no factor TF: 64-65 | | 2015-01-14 | VictordeHollander | NF | no factor TF: 63-64 | | 2014-11-10 | Joss | NF-PM1 | B1=86296 | | 2012-02-20 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2011-09-27 | Squeeky_Squirrel | NF-PM1 | B1=70000, B2=1190000, E=6 | | 2011-03-12 | Grant McCracken | NF | no factor TF: 61-62 | | 2009-08-01 | Carsten Kossendey | NF-PM1 | B1=20000, B2=285000 | | 2009-01-02 | Architects Cubed | NF | no factor TF: 60-61 | | 1999-09-22 | -anonymous- | C-LL | FE1273012311367C | | 1998-01-27 | -anonymous- | C-LL | FE1273012311367C | | 1997-11-21 | -anonymous- | NF | no factor TF: 1-60 |
|
