gistfile1.txt

factor = []
array = [2, 4, 5, 7, 11, 10] 


array.each{|x|
y = 2 
while y < x 
    if x % y == 0
        factor << y
    end 
    y = y +1
end

if factor.length != 0
    array[x] = 0 
end
}

puts factor