| 2520979 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 275 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 151 / 280 |
Estimated T-Level: 22.7 ⓘ TF below 2^70 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Richard Workman | 6731AF9F220685F3 | 0 | Windows,Prime95,v14,NT service,(aka WQ5) | | Factored | 1999-04-13 | Phillip Twiss | 6731AF9F220685F3 | 106067 | Windows,Prime95,v18,(aka WU1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2017-10-14 | Oliver Kruse | E7113A2C47F076BB | 1 | 1187682 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-11-30 | storm5510 | E7113A2C47F076BB | 1 | 203937 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2024-02-26 | MartianPig | NF | no factor TF: 67-68 | | 2024-02-26 | MartianPig | NF | no factor TF: 74-75 | | 2024-02-26 | MartianPig | NF | no factor TF: 73-74 | | 2024-02-26 | MartianPig | NF | no factor TF: 72-73 | | 2024-02-26 | MartianPig | NF | no factor TF: 71-72 | | 2024-02-26 | MartianPig | NF | no factor TF: 70-71 | | 2024-02-25 | MartianPig | NF | no factor TF: 69-70 | | 2024-02-25 | MartianPig | NF | no factor TF: 68-69 | | 2024-02-25 | MartianPig | F | Factor: 5587158158116673041 / TF: 62-63 | | 2022-09-17 | USAFSS | NF-PM1 | B1=390000, B2=508533480 | | 2022-03-10 | LordJulius | NF | no factor TF: 1-60 | | 2017-11-30 | storm5510 | C-PRP | M2520979/5587158158116673041 : E7113A2C47F076BB | | 2017-10-14 | Oliver Kruse | C-PRP | M2520979/5587158158116673041 : E7113A2C47F076BB | | 2011-03-04 | James Heinrich | F | Factor: 5587158158116673041 | | 2011-01-06 | Joss | NF-PM1 | B1=50000 | | 2011-01-01 | Joss | NF-PM1 | B1=30000 | | 2010-12-19 | Joss | NF-PM1 | B1=20000 | | 2009-01-31 | Sturle Sunde | NF | no factor TF: 60-61 | | 2003-10-31 | Team Prime Rib | NF-PM1 | B1=15000, B2=236250 | | 2003-10-23 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 1999-04-13 | PhillT | C-LL | 6731AF9F220685F3 | | 1999-03-15 | PhillT | NF | no factor TF: 1-59 |
|
