| 5404687 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 18 / 280 |
Estimated T-Level: 20.3 ⓘ TF below 2^63 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-08-30 | Lyle Bergman | 9CA96289C3C310AA | 0 | Windows,Prime95,v16,(aka WS1) | | Factored | 2000-08-17 | Charles Dorian | 9CA96289C3C310AA | 4320612 | Windows,Prime95,v20,(aka WW1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-15 | Stefan G Hoffmann | 612FEBB17D56D6F4 | 1 | 3896746 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-15 | themaanderson | CERT | Proof certified good | | 2025-03-15 | Stefan G Hoffmann | C-PRP | Proof Certified Good
Proof Power: 7
| | 2025-03-10 | Andrey Dobrynin | F-ECM | Factor: 29884476945214725774623 / ECM curve 5, B1=50000, B2=64857975, Edwards Sigma=5131897298606674 | | 2022-07-12 | Sid & Andy | NF-PM1 | B1=5000000, B2=7303965900 | | 2021-09-19 | SRBase | NF | no factor TF: 71-72 | | 2021-08-24 | SRBase | NF | no factor TF: 70-71 | | 2021-08-18 | SRBase | NF | no factor TF: 69-70 | | 2020-10-05 | TJAOI | NF | no factor TF: 68-69 | | 2018-06-29 | ramgeis | NF | no factor TF: 67-68 | | 2016-06-18 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-08-21 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-12-29 | monst | NF | no factor TF: 64-65 | | 2014-12-28 | Nesowa | NF | no factor TF: 63-64 | | 2013-09-15 | Markus Tervooren | NF-PM1 | B1=1500000, B2=55000000, E=12 | | 2009-11-23 | USAFSS | NF-PM1 | B1=60000, B2=1020000, E=6 | | 2008-04-07 | abc | NF | no factor TF: 1-63 | | 2000-08-17 | Charlie Dorian | C-LL | 9CA96289C3C310AA | | 2000-06-29 | Charlie Dorian | NF-PM1 | B1=20000, B2=20000 | | 2000-06-26 | Charlie Dorian | NF-PM1 | B1=20000, B2=20000 | | 1998-08-30 | -anonymous- | C-LL | 9CA96289C3C310AA | | 1998-04-21 | -anonymous- | NF | no factor TF: 1-62 |
|
