start = int(raw_input("Enter the start point(1-1000):"))
end = int(raw_input("Enter the end point(1-1000):"))
def cl(x):return x==2 or x==3 or x==5 or x==7 or (x%2!=0 and x%3!=0 and x%5!=0 and x%7!=0)
a = filter(cl,range(start,end))
if(start < end):
    for i in a:
        print i
    print 'Argument Error!'
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