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...

> bc is quite an amazing calculator.
> 
> BAJ
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