big numbers

Hello,

How big a number can be stored as a integer in the lateset version of
postgres. See i got some code to do IP management and since i am just
using IPV4 addresses right now i am able to math operations on the
octets w/o to much fuss, since each octet is just composed of 8 bits.
But of course IPV6 is composed of 4-32 bit parts , or 1 - 128 bit
number.

-lorenzo

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