*_000_0000_0000_****_****_****_****_****_****_****_****_****_****_****_****_**** 
    => 2^53 = 9,007,199,254,740,992
    => #zeroes = 2
    => #denormals = 9,007,199,254,740,990
        => #positive = 4,503,599,627,370,495
        => #negative = 4,503,599,627,370,495