| 3639983 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 271 TF target 264 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 217 / 280 |
Estimated T-Level: 23.9 ⓘ TF below 2^74 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1997-12-30 | John R Pierce | 217E2B4DA8793FD3 | 0 | Windows,Prime95,v14,NT service,(aka WQ5) | | Factored | 1999-08-16 | rjcorr | 217E2B4DA8793FD3 | 3560815 | Windows,Prime95,v18,(aka WU1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-27 | fordobr | 0C377FF138ED2FEE | 1 | 3186100 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-27 | Manfred_Bruder_01-05-1988_DE | CERT | Proof certified good | | 2025-03-27 | fordobr | C-PRP | M3639983/1804581663314042818527983 : 0C377FF138ED2FEE Proof Certified Good
Proof Power: 7
| | 2025-03-27 | fordobr | F-ECM | Factor: 1804581663314042818527983 / ECM curve 16, B1=127951, B2=275660385, Edwards Sigma=4554289243083407 | | 2024-12-20 | TJAOI | NF | no factor TF: 70-71 | | 2024-11-06 | Joss | NF-PM1 | B1=10000000, B2=14785961190 | | 2024-03-14 | Joss | NF-PM1 | B1=10000000, B2=5128433310 | | 2022-02-09 | Gordon Spence | NF | no factor TF: 69-70 | | 2020-11-06 | axn | NF | no factor TF: 68-69 | | 2020-08-19 | axn | NF-PM1 | B1=30000000, B2=1000000000 | | 2020-07-26 | axn | NF-PM1 | B1=30000000, B2=600000000 | | 2018-08-06 | TJAOI | NF | no factor TF: 67-68 | | 2017-03-02 | Joss | NF-PM1 | B1=241228, B2=2412280, E=6 | | 2017-02-04 | Joss | NF-PM1 | B1=201024 | | 2017-01-29 | Joss | NF-PM1 | B1=167520 | | 2016-12-27 | Joss | NF-PM1 | B1=129600 | | 2016-12-26 | Gordon Spence | NF | no factor TF: 66-67 | | 2016-06-08 | Joss | NF-PM1 | B1=108000, B2=3240000, E=6 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2016-02-23 | Mark Rose | NF | no factor TF: 60-61 | | 2015-10-18 | ramgeis | NF | no factor TF: 65-66 | | 2015-01-22 | VictordeHollander | NF | no factor TF: 64-65 | | 2015-01-22 | VictordeHollander | NF | no factor TF: 63-64 | | 2012-06-20 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2012-01-24 | Squeeky_Squirrel | NF-PM1 | B1=90000, B2=1620000, E=6 | | 2011-05-16 | markr | NF | no factor TF: 61-62 | | 2009-07-06 | Carsten Kossendey | NF-PM1 | B1=20000, B2=245000 | | 1999-08-16 | -anonymous- | C-LL | 217E2B4DA8793FD3 | | 1997-12-30 | -anonymous- | C-LL | 217E2B4DA8793FD3 | | 1997-12-30 | -anonymous- | NF | no factor TF: 1-60 |
|
