| 3987079 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 271 TF target 265 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 263 / 280 |
Estimated T-Level: 24.7 ⓘ TF below 2^77 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-10-04 | Pete Wohlmut | 9731E676ABB87FBA | 0 | Windows,Prime95,v14,(aka WQ1) | | Factored | 1998-10-04 | Peter G. Wohlmut | 9731E676ABB87FBA | 0 | Windows,Prime95,v14,(aka WQ1) | | Bad | 2000-06-23 | chatmate | 1C3ABD9D1F8A6DA1 | 499330 | Windows,Prime95,v17,(aka WT1) | | Factored | 2001-04-15 | Alex Phillips | 9731E676ABB87FBA | 1052214 | Windows,Prime95,v20,(aka WW1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-01-28 | fordobr | ABDDAD2FD2810272 | 1 | 2865208 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-01-28 | ANONYMOUS | CERT | Proof certified good | | 2025-01-28 | fordobr | C-PRP | M3987079/241670479560728212089817 : ABDDAD2FD2810272 Proof Certified Good
Proof Power: 7
| | 2025-01-28 | fordobr | F-ECM | Factor: 241670479560728212089817 / ECM curve 45, B1=90479, B2=194573610, Edwards Sigma=3405300220646059 | | 2025-01-19 | Joss | NF-PM1 | B1=20258420, B2=25815439650 | | 2023-06-29 | Sid & Andy | NF-PM1 | B1=5100000, B2=15749383650 | | 2022-03-16 | King | NF-PM1 | B1=5000000, B2=405092520 | | 2021-06-03 | -anonymous- | NF | no factor TF: 70-71 | | 2021-05-17 | axn | NF | no factor TF: 69-70 | | 2020-05-08 | TJAOI | NF | no factor TF: 68-69 | | 2018-12-20 | Yxinity | NF | no factor TF: 67-68 | | 2016-12-16 | Gordon Spence | NF | no factor TF: 66-67 | | 2016-10-18 | Squeeky_Squirrel | NF-PM1 | B1=245000, B2=6860000, E=12 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2016-01-28 | ramgeis | NF | no factor TF: 65-66 | | 2015-09-17 | Squeeky_Squirrel | NF-PM1 | B1=190000, B2=4845000, E=6 | | 2014-11-25 | Joss | NF-PM1 | B1=86098 | | 2013-10-16 | David Campeau | NF | no factor TF: 64-65 | | 2013-07-11 | Jayder | NF | no factor TF: 63-64 | | 2012-02-20 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2011-09-13 | Squeeky_Squirrel | NF-PM1 | B1=70000, B2=1190000, E=6 | | 2011-02-27 | Grant McCracken | NF | no factor TF: 61-62 | | 2001-04-15 | phillisoft | C-LL | 9731E676ABB87FBA | | 2001-03-17 | phillisoft | NF-PM1 | B1=20000, B2=255000 | | 2000-06-23 | -anonymous- | C-LL | 1C3ABD9D1F8A6DA1 | | 2000-05-31 | -anonymous- | NF | no factor TF: 1-61 | | 2000-05-17 | -anonymous- | NF | no factor TF: 1-61 | | 1999-12-30 | -anonymous- | NF | no factor TF: 1-61 | | 1998-10-04 | -anonymous- | C-LL | 9731E676ABB87FBA |
|
