[tex]41-is \ a \ prime \ number \\ 43 -is \ a \ prime \ number \\\ 44-it's \ not \ divided \ by \ 3 \\45-it's \ not \ divided \ by \ 2 \\46-it's \ not divided \ by \ 3 \\ 47-it's \ a \ prime \ number \\ 49 -it's \ not \ divided \ by \ 2 \ or \ 3 \\\\ 42|2 \\ 21|3 \\ 7 \ | 7 \\ 1\\\\ 42=2*3*7 \\\\ 48|2 \\ 24|2 \\ 12|2 \\ 6 \ | 2 \\ 3 \ |3 \\ 1 \\\\ 48=2^4*3[/tex]
