On a Sun, Maple gives
28433 * 2^7830457); --- 83 seconds
28433 * 2^7830457 mod 10000000000); --- 83 seconds
so it really is calculating the 2 million digit product.
To make Maple smart, you have to use neutral operators. This suppresses
immediate execution and allows simplifications to be used. The neutral
form of ^ is &^.
28433 * 2&^7830457 mod 10000000000); --- 0.06 seconds
Best wishes,
John
bill lam wrote:
> I realise how slow my PC is. (Celeron 1.7G / 512MB)
> It cannot compute _10{. ": >: 28433 * 2^7830457x within an hour, so I
> aborted it.
>
> My question is:
> Can Maple actually calculate this 2 million digit product within 30
> seconds,
> or it just clever enough to make advantage of the "mod 10000000000"
>
> Is
> time(((28433*2^7830457)+1));
> still under 30 seconds?
>
> Skip Cave mentioned it took 15 minutes in J. so relative speed of Maple
> and J is about 30.
> Is there any chance of comparison on the same computer.
>
>
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
>
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For information about J forums see http://www.jsoftware.com/forums.htm
