static final int[] maxSafeDigits = new int[Character.MAX_RADIX + 1];

    static {
      BigInteger overflow = BigInteger.ONE.shiftLeft(64);
      for (int i = Character.MIN_RADIX; i <= Character.MAX_RADIX; i++) {
        maxValueDivs[i] = divide(MAX_VALUE, i);
        maxValueMods[i] = (int) remainder(MAX_VALUE, i);
        maxSafeDigits[i] = overflow.toString(i).length() - 1;
      }
    }