Date: Dec 8, 2012 10:34 PM
Author: Ben Bacarisse
Subject: Re: No Putnam spoilers please

Dr J R Stockton <> writes:

> In sci.math message <
>>, Thu, 6 Dec 2012 23:38:29, Dr J R Stockton <
> uk.invalid> posted:

>>In that calculation, longcalc uses only elementary arithmetic, as used
>>to be taught in schools in my day. Your proof, however, is 50%
>>incomprehensible to me. Though it may well be right. Longcalc found an
>>error in *a* printed representation of (3^349-1)/2, which you might have
>>difficulty with. Fx : checks : I think it has found another one.

> Can anyone (or more) please provide here the last ten decimal digits (in
> order) of ((3^349)-1)/2, freshly and independently calculated and not
> copied from any other medium, and not using my LongCalc or VastCalc?

'bc' reports:

$ bc <<<"(3^349-1)/2"

so 7379284041. Haskell agrees:

Prelude> (3^349-1) `div` 2

as does Python:

>>> (3**349-1)/2

Forgive the overkill but I was not sure why you were asking.