// 23-jun-2011
// very slow

def isfactor (i, f): # wrong name
    if (i % f)==0:
        return True
    return False

t=20
while True:
    #print ("testing %d" % t)

    found=True
    
    for i in range(2, 20):
        if isfactor (t,i)==False:
            found=False
            break
    
    if found:
        print ("%d OK!" % t)
        break
    t=t+1