| 3056381 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 271 TF target 264 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 64 / 640 |
Estimated T-Level: 25.5 ⓘ TF below 2^80 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Sturle Sunde | 16EA0C981914D37C | 0 | Mac,John Sweeney,v1.4,(aka J3) | | Factored | 1998-02-08 | Ed Winchester | 16EA0C981914D37C | 0 | Windows,Prime95,v14,(aka WQ1) | | Bad | 1998-03-17 | Antoine Hurkmans | 2BCFE1F3E148E008 | 0 | Windows,Prime95,v15,(aka WR1) | | Factored | 2015-11-14 | MadPoo 🙂 | 16EA0C981914D37C | 2450404 | Windows 64-bit,Prime95,v26,(aka We4) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-01-01 | Andrey Dobrynin | C885F315CF9F24AD | 1 | 2287644 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-01-01 | Xyzzy | CERT | Proof certified good | | 2025-01-01 | Andrey Dobrynin | C-PRP | Proof Certified Good
Proof Power: 7
| | 2025-01-01 | Andrey Dobrynin | F-ECM | Factor: 184244430263704640690321 / ECM curve 30, B1=139668, B2=275660385, Edwards Sigma=5184241540020275 | | 2024-03-30 | Joss | NF-PM1 | B1=10000000, B2=10000856250 | | 2022-12-07 | mikr | NF | no factor TF: 70-71 | | 2022-05-11 | mikr | NF | no factor TF: 69-70 | | 2021-12-09 | oodaira | NF-PM1 | B1=32489031, B2=1851874767 | | 2021-03-18 | TJAOI | NF | no factor TF: 68-69 | | 2018-07-28 | ramgeis | NF | no factor TF: 67-68 | | 2017-10-23 | mikr | NF-PM1 | B1=3000000, B2=100000000, E=12 | | 2017-05-09 | Gordon Spence | NF | no factor TF: 66-67 | | 2017-01-04 | Joss | NF-PM1 | B1=132000 | | 2016-10-15 | Squeeky_Squirrel | NF-PM1 | B1=195000, B2=5362500, E=6 | | 2015-11-14 | MadPoo 🙂 | C-LL | 16EA0C981914D37C | | 2015-06-06 | Tha | NF | no factor TF: 65-66 | | 2015-02-07 | VictordeHollander | NF | no factor TF: 64-65 | | 2015-02-07 | VictordeHollander | NF | no factor TF: 63-64 | | 2013-01-07 | dbaugh | NF | no factor TF: 62-63 | | 2011-03-27 | Sid & Andy | NF | no factor TF: 61-62 | | 2010-10-02 | markr | NF-PM1 | B1=110000, B2=2447500, E=6 | | 2009-02-13 | Sturle Sunde | NF | no factor TF: 60-61 | | 2004-02-07 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 2001-06-03 | David Campeau | NF | no factor TF: 1-60 | | 1998-03-17 | -anonymous- | C-LL | 2BCFE1F3E148E008 | | 1998-02-08 | -anonymous- | NF | no factor TF: 1-59 | | 1998-02-08 | -anonymous- | C-LL | 16EA0C981914D37C |
|
