| 5414819 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 84 / 280 |
Estimated T-Level: 21.5 ⓘ TF below 2^66 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-09-20 | Laura Cooksey | 8E033525DF25221C | 0 | Windows,Prime95,v16,(aka WS1) | | Factored | 2000-08-17 | Wim Bollen | 8E033525DF25221C | 1013476 | 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 | Oliver Kruse | FD60C14FD3123650 | 1 | 2460157 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-18 | Marvinist | CERT | Proof certified good | | 2025-03-18 | Oliver Kruse | C-PRP | Proof Certified Good
Proof Power: 7
| | 2025-03-12 | Andrey Dobrynin | F-ECM | Factor: 6304264513526093947104479 / ECM curve 42, B1=50000, B2=45039225, Edwards Sigma=3121440510538252 | | 2022-07-15 | Sid & Andy | NF-PM1 | B1=5000000, B2=7303965900 | | 2021-09-18 | SRBase | NF | no factor TF: 71-72 | | 2021-08-24 | SRBase | NF | no factor TF: 70-71 | | 2021-08-19 | SRBase | NF | no factor TF: 69-70 | | 2021-06-07 | Dylan Delgado | NF-PM1 | B1=560000, B2=34160000 | | 2020-09-21 | TJAOI | NF | no factor TF: 68-69 | | 2019-08-02 | USAFSS | NF-PM1 | B1=325000, B2=9668750 | | 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 | | 2014-12-30 | monst | NF | no factor TF: 64-65 | | 2014-12-29 | Nesowa | NF | no factor TF: 63-64 | | 2010-10-20 | Squeeky_Squirrel | NF-PM1 | B1=60000, B2=960000, E=6 | | 2009-08-26 | Carsten Kossendey | NF-PM1 | B1=25000, B2=350000 | | 2009-05-16 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2000-08-17 | -anonymous- | C-LL | 8E033525DF25221C | | 2000-08-17 | -anonymous- | C-LL | 8E033525DF25221C | | 1998-09-20 | -anonymous- | C-LL | 8E033525DF25221C | | 1998-04-11 | -anonymous- | NF | no factor TF: 1-62 |
|
