| 49673453 | Composite: proven not-prime with Lucas-Lehmer test No factors below 276 TF target 273 |
| P-1 | | B1 = | 1500000 | | B2 = | 45000000 |
|
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 11 / 280 |
Estimated T-Level: 20.2 ⓘ TF below 2^62 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Verified | 2013-01-11 | Stephan Grupp | 990BDC0184F80862 | 20673020 | Windows,Prime95,v26.6,build 3 | | Verified | 2019-12-13 | Dubslow | 990BDC0184F80862 | 31769424 | Linux 64-bit,Prime95,v29.8,build 6 |
|
| History | | Date | User | Type | Result |
|---|
| 2021-09-19 | Anton Repko | NF-PP1 | Start=2/7, B1=700000, B2=34300000 | | 2021-09-06 | Anton Repko | NF | no factor TF: 74-76 | | 2021-07-05 | Sid & Andy | NF-PM1 | B1=1500000, B2=45000000 | | 2019-12-13 | Dubslow | C-LL | 990BDC0184F80862 | | 2018-12-23 | -anonymous- | NF | no factor TF: 73-74 | | 2018-02-14 | monst | NF | no factor TF: 72-73 | | 2013-01-11 | Stephan Grupp | C-LL | 990BDC0184F80862 | | 2012-02-08 | Greg | NF | no factor TF: 71-72 | | 2012-02-05 | lalera | NF | no factor TF: 70-71 | | 2012-02-03 | Bdot | NF | no factor TF: 69-70 | | 2011-04-19 | inprocomp | NF-PM1 | B1=575000, B2=14518750 | | 2008-08-26 | tmorrow | NF | no factor TF: 1-69 | | 2007-08-14 | 1997rj7 | NF | no factor TF: 1-63 | | 2003-12-31 | Team Prime Rib | NF | no factor TF: 1-59 |
|
