On Thu, Apr 20, 2006 at 12:08:06PM -0600, Robert Rolf wrote:
> 
> 
> Byron A Jeff wrote:
> 
> > On Thu, Apr 20, 2006 at 09:23:36AM -0400, Peter Todd wrote:
> > 
> >>On Thu, Apr 20, 2006 at 02:54:52PM +0200, YAP wrote:
> >>
> >>>What is 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF (128 bits) in decimal?  How go a
> >>>head an calculate big numbers like this.
> >>
> >>If you have Linux, the bc calculator is great for this sort of thing:
> >>
> >>pete@gw:~$ bc
> >>bc 1.06
> >>Copyright 1991-1994, 1997, 1998, 2000 Free Software Foundation, Inc.
> >>This is free software with ABSOLUTELY NO WARRANTY.
> >>For details type `warranty'.
> >>ibase=16
> >>FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
> >>340282366920938463463374607431768211455
> >>quit
> >>pete@gw:~$
> >>
> >>It can work with arbitrarily large numbers, computing crazy stuff like
> >>2^(2^16) works. 
> > 
> > 
> > This is how I computed the answer earlier. I double checked it with
> > 2^128. 
> 
> Uhh, shouldn't that be 2^128-1?  0xFFFF is 65535 not 65536 so by extension...

Of course. But when I saw the same long string of numbers ending in 56 instead of
55 I know that I had the correct value.

BAJ
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