| 2939899 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 270 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 100 / 640 |
Estimated T-Level: 25.8 ⓘ TF below 2^81 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Bad | | Ron Whittle | 32B87D64F4EF45D1 | 0 | Windows,Prime95,v14,(aka WQ1) | | Factored | 1999-06-15 | François PERRUCHAUD | 989F49603D13D8E3 | 2187593 | Windows,Prime95,v18,(aka WU1) | | Factored | 1999-12-15 | Stuart Light | 989F49603D13D8E3 | 2928369 | Linux 32-bit,Prime95,v19,(aka WV2) | | Factored | 2018-10-10 | kkmrkkblmbrbk | 989F49603D13D8E3 | 703002 | 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 | 2025-01-28 | Andrey Dobrynin | 5B331ADEF6682A20 | 1 | 608138 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-01-28 | Greg | CERT | Proof certified good | | 2025-01-28 | Andrey Dobrynin | C-PRP | Proof Certified Good
Proof Power: 7
| | 2025-01-28 | Andrey Dobrynin | F-ECM | Factor: 9614258311284543282542039 / ECM curve 45, B1=166596, B2=367552185, Edwards Sigma=7737270960264265 | | 2023-02-27 | TJAOI | NF | no factor TF: 69-70 | | 2022-12-04 | mikr | NF-PM1 | B1=10000000, B2=19223759100 | | 2022-11-06 | Joss | NF-PM1 | B1=1200000, B2=3372218850 | | 2021-05-24 | TJAOI | NF | no factor TF: 68-69 | | 2018-12-22 | chuenkit | NF | no factor TF: 67-68 | | 2018-10-10 | kkmrkkblmbrbk | C-LL | 989F49603D13D8E3 | | 2017-11-24 | Gordon Spence | NF | no factor TF: 66-67 | | 2016-02-24 | ramgeis | NF | no factor TF: 65-66 | | 2016-02-23 | Mark Rose | NF | no factor TF: 1-60 | | 2015-04-29 | VictordeHollander | NF-PM1 | B1=1000000, B2=20000000, E=12 | | 2015-04-25 | VictordeHollander | NF | no factor TF: 64-65 | | 2015-04-25 | VictordeHollander | NF | no factor TF: 63-64 | | 2013-01-07 | dbaugh | NF | no factor TF: 62-63 | | 2011-12-29 | markr | NF | no factor TF: 61-62 | | 2010-11-07 | markr | NF-PM1 | B1=105000, B2=2283750, E=6 | | 2009-02-12 | Sturle Sunde | NF | no factor TF: 60-61 | | 2003-12-23 | Team Prime Rib | NF-PM1 | B1=10000 | | 2003-12-13 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 1999-12-15 | jingfired | C-LL | 989F49603D13D8E3 | | 1999-06-15 | -anonymous- | C-LL | 989F49603D13D8E3 |
|
