| 2522503 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 189 / 280 |
Estimated T-Level: 23.4 ⓘ TF below 2^73 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Michael B. Clark | F2DA1DF594A99374 | 0 | Windows,Prime95,v14,(aka WQ1) | | Factored | 1999-05-30 | David Phillips | F2DA1DF594A99374 | 655034 | Windows,Prime95,v17,(aka WT1) | | Factored | 2018-06-06 | kkmrkkblmbrbk | F2DA1DF594A99374 | 941055 | Windows 64-bit,Prime95,v29.4,build 5 |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2020-08-10 | storm5510 | A0BF25E408911098 | 1 | 740350 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2020-08-10 | George Woltman | CERT | Proof certified good | | 2020-08-10 | storm5510 | C-PRP | M2522503/14743309373985219559988719 : A0BF25E408911098 Proof Certified Good
Proof Power: 7
| | 2020-08-10 | -anonymous- | F-ECM | Factor: 14743309373985219559988719 / ECM curve 1, B1=50000, B2=5000000, Montgomery Sigma=6219393420058049 | | 2019-04-29 | TJAOI | NF | no factor TF: 67-68 | | 2018-06-06 | kkmrkkblmbrbk | C-LL | F2DA1DF594A99374 | | 2018-05-18 | mikr | NF-PM1 | B1=3000000, B2=135000000, E=12 | | 2017-12-11 | Joss | NF-PM1 | B1=600000, B2=6000000, E=6 | | 2017-09-29 | Gordon Spence | NF | no factor TF: 66-67 | | 2016-02-23 | Mark Rose | NF | no factor TF: 59-60 | | 2015-11-06 | ramgeis | NF | no factor TF: 65-66 | | 2015-02-23 | VictordeHollander | NF | no factor TF: 64-65 | | 2015-02-23 | VictordeHollander | NF | no factor TF: 63-64 | | 2013-01-14 | dbaugh | NF | no factor TF: 62-63 | | 2012-06-13 | Sebastian Hornbostel | NF | no factor TF: 61-62 | | 2011-03-07 | James Heinrich | NF-PM1 | B1=300000, B2=8000000, E=12 | | 2011-01-06 | Joss | NF-PM1 | B1=50000 | | 2011-01-02 | Joss | NF-PM1 | B1=30000 | | 2010-12-19 | Joss | NF-PM1 | B1=20000 | | 2009-01-28 | 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 | | 1999-08-16 | -anonymous- | NF | no factor TF: 1-59 | | 1999-05-30 | -anonymous- | C-LL | F2DA1DF594A99374 |
|
