| 5426207 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 273 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 95 / 280 |
Estimated T-Level: 21.7 ⓘ TF below 2^67 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-10-04 | John MacPherson | 9F426051767A96DF | 0 | Windows,Prime95,v16,(aka WS1) | | Factored | 2000-09-23 | ken bieber | 9F426051767A96DF | 1925367 | Windows,Prime95,v19,(aka WV1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-18 | blin00 | 96CB282A6751B479 | 1 | 2211243 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-18 | mikej | CERT | Proof certified good | | 2025-03-18 | blin00 | C-PRP | M5426207/2940159377687977322662157623 : 96CB282A6751B479 Proof Certified Good
Proof Power: 7
| | 2025-03-13 | fordobr | F-ECM | Factor: 2940159377687977322662157623 / ECM curve 45, B1=50000, B2=45000000, Edwards Sigma=4913921574737653 | | 2023-03-09 | yoyorocks1 | NF | no factor TF: 72-73 | | 2022-08-06 | Sid & Andy | NF-PM1 | B1=5000000, B2=7303965900 | | 2021-09-19 | SRBase | NF | no factor TF: 71-72 | | 2021-08-25 | SRBase | NF | no factor TF: 70-71 | | 2021-08-18 | SRBase | NF | no factor TF: 69-70 | | 2020-09-07 | TJAOI | NF | no factor TF: 68-69 | | 2020-04-24 | King | NF-PM1 | B1=1000000, B2=22500000 | | 2018-06-29 | ramgeis | NF | no factor TF: 67-68 | | 2016-06-22 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-08-22 | snme2pm1 | NF | no factor TF: 65-66 | | 2015-01-02 | monst | NF | no factor TF: 64-65 | | 2015-01-01 | Nesowa | NF | no factor TF: 63-64 | | 2010-10-24 | Squeeky_Squirrel | NF-PM1 | B1=60000, B2=960000, E=6 | | 2009-08-23 | Carsten Kossendey | NF-PM1 | B1=25000, B2=350000 | | 2009-05-13 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2000-09-23 | -anonymous- | C-LL | 9F426051767A96DF | | 1998-10-04 | -anonymous- | C-LL | 9F426051767A96DF | | 1998-03-23 | -anonymous- | NF | no factor TF: 1-62 |
|
