for (var counter = 1; counter <= 33; counter = counter + 1)
{
    var i = 0
    for (var bob = 2; counter <= counter; bob++)
    {
        if (counter % bob === 0)
        {
            i = i+1
        }
    }
    if(i=1)
    {
        console.log(counter)
    }
}