Invisible <voi### [at] devnull> wrote:
> Ask WA to factorise 40! [i.e., forty factorial] and it can do it in a 
> split second.

  40! is very easy to factorize (using common fast factorization methods
such as the elliptic curve method) because it has, by its very definition,
very small factors.

  Now try to make it factorize a number that is the product of two primes
in the order of magnitude of 40!, and you could wait for the Sun to die
before it happens.

-- 
                                                          - Warp

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