scott wrote:
>> .....1,549,498,368
> 
> I recognise those last 6 digits!  I think I got them from my program, 
> but then my method was too slow to do any more digits in reasonable time.
> 

It's interesting that you had an algorithm that could compute six digits 
but not ten.  You might try running it on the second version of the 
puzzle that I gave, since I only ask for the last five digits in that 
case.  Maybe it'll work!

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