behavior of get-hashnumber with bignums

Hello,

Even understanding why, given the underlying implementation details, I
still find it surprising that #z123 (the bignum representation of 123)
hashes to a different value than 123. Would we be asking for problems
if get-hashnumber simply returned its value as long if less than the
max value of a long. This would bring its behavior into line with the
rest of the supported integer types. What do people think?

Best Regards,
Joseph Donaldson