| 7192021 | Composite, with 2 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 267 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 3 / 280 |
Estimated T-Level: 20.1 ⓘ TF below 2^62 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1999-07-27 | Marc Getty / Phil Fizur | 53632808E1E36B1C | 3961228 | Windows,Prime95,v18,(aka WU1) | | Factored | 2002-05-11 | Marc Getty / Phil Fizur | 53632808E1E36B1C | 2441090 | Windows,Prime95,v20,NT service,(aka WW5) | | Factored | 2003-05-19 | Brian J. Beesley | 53632808E1E36B1C | 3743692 | Linux 32-bit,Prime95,v22,(aka WY2) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Factored | PRP without proof (not generated) | 2018-02-18 | Oliver Kruse | 384CC567F1BB9205 | 1 | 2011451 | 5 | 3 | | Factored | PRP without proof (not generated) | 2019-04-05 | kkmrkkblmbrbk | 384CC567F1BB9205 | 1 | 3214238 | 5 | 3 | | Verified | PRP without proof (not generated) | 2020-06-12 | Oliver Kruse | 384CC567F1BB9205 | 2 | 1893772 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-02-01 | Stef42 | NF-PM1 | B1=2950000, B2=5632496100 | | 2020-06-12 | Oliver Kruse | C-PRP | M7192021/70788265438582404673/111459725760178522423 : 384CC567F1BB9205 | | 2020-06-10 | TJAOI | F | Factor: 111459725760178522423 | | 2019-04-05 | kkmrkkblmbrbk | C-PRP | M7192021/70788265438582404673 : 384CC567F1BB9205 | | 2018-02-18 | Oliver Kruse | C-PRP | M7192021/70788265438582404673 : 384CC567F1BB9205 | | 2015-06-21 | VictordeHollander | F | Factor: 70788265438582404673 / TF: 65-66 | | 2014-02-04 | lycorn | NF | no factor TF: 64-65 | | 2014-02-02 | Nesowa | NF | no factor TF: 63-64 | | 2003-05-19 | -anonymous- | C-LL | 53632808E1E36B1C | | 2003-01-16 | -anonymous- | NF | no factor TF: 1-63 | | 2003-01-16 | -anonymous- | NF-PM1 | B1=90000, B2=1642500, E=4 | | 2002-05-11 | -anonymous- | C-LL | 53632808E1E36B1C | | 2002-04-28 | -anonymous- | NF-PM1 | B1=35000, B2=507500 | | 1999-07-27 | -anonymous- | C-LL | 53632808E1E36B1C | | 1998-06-14 | -anonymous- | NF | no factor TF: 1-62 |
|
