Merry Ch  684320797272654D = 1.320797272654D * 2**645
Kerry Ch  684320797272654B = 1.320797272654B * 2**645

ristmas!  2173616D74736972 = 1.3616D74736972 * 2**(-488)
tistmas!  2173616D74736974 = 1.3616D74736974 * 2**(-488)