| 4662341 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 265 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 109 / 280 |
Estimated T-Level: 21.9 ⓘ TF below 2^68 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Greg Hewgill | 9142395A080838D3 | 0 | Windows,Prime95,v14,NT service,(aka WQ5) | | Factored | 1999-12-08 | Eric Peterson | 9142395A080838D3 | 2120840 | Windows,Prime95,v19,(aka WV1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-29 | Andrey Dobrynin | 3D1E06FBC86323E7 | 1 | 1986221 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-29 | Oliver Buhr | CERT | Proof certified good | | 2025-03-29 | Andrey Dobrynin | C-PRP | Proof Certified Good
Proof Power: 7
| | 2025-03-29 | Andrey Dobrynin | F-ECM | Factor: 3830986485914441502181507361 / ECM curve 19, B1=66506, B2=88280115, Edwards Sigma=27015364670518 | | 2022-12-12 | Sid & Andy | NF-PM1 | B1=4300000, B2=11209383900 | | 2021-03-22 | -anonymous- | NF | no factor TF: 71-72 | | 2021-03-22 | -anonymous- | NF | no factor TF: 70-71 | | 2021-03-22 | -anonymous- | NF | no factor TF: 69-70 | | 2021-03-22 | -anonymous- | NF | no factor TF: 68-69 | | 2018-10-18 | chuenkit | NF | no factor TF: 67-68 | | 2018-07-16 | BloodERazor | NF | no factor TF: 66-67 | | 2018-02-07 | Ismo Laitela | NF-PM1 | B1=1988203, B2=61634303, E=12 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2015-07-08 | snme2pm1 | NF | no factor TF: 65-66 | | 2015-02-09 | monst | NF | no factor TF: 64-65 | | 2015-02-08 | Jayder | NF | no factor TF: 63-64 | | 2012-02-15 | Squeeky_Squirrel | NF-PM1 | B1=110000, B2=2090000, E=6 | | 2011-12-11 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2010-07-15 | markr | NF | no factor TF: 61-62 | | 2009-08-30 | Carsten Kossendey | NF-PM1 | B1=25000, B2=381250 | | 2002-08-31 | David Campeau | NF | no factor TF: 1-61 | | 1999-12-08 | -anonymous- | C-LL | 9142395A080838D3 |
|
