n = int(input('n='))
print(f'cac so nguyen to <={n}:',end=' ')
for i in range (2,n+1):
    kt=True
    for j in range (2,i):
        if (i%j==0):
            kt=False
    if (kt):
        print(i, end=' ')

$\color{green}{\text{Cần code C/C++, Java, C#, JavaScript thì nói để mình thêm}}$

$\color{red}{\text{#Daoanhviet96}}$

uses crt;

var i, n, k, j : integer;

begin

clrscr;

write('Nhap so n = '); readln(n);

write('Cac so nguyen to : ');

for i := 2 to n do

    begin

        k := 2;

        for j := 2 to i - 1 do

            if i mod j = 0 then k := 1;

        if k = 2 then write(i,' ');

    end;

readln

end.