Sorry I misread your post. I thought you had done it in J.

___________________________

David Vaughan

On 6 Jul 2011, at 17:23, Ben Gorte - LR <[email protected]> wrote:

> The input for bc ?
> $  time echo 28433 * 2^7830457 + 1 | bc > result
> 
> real    5m0.550s
> user    5m0.231s
> sys    0m0.140s
> 
> hth
> 
>> -----Original Message-----
>> From: [email protected] [mailto:programming-
>> [email protected]] On Behalf Of David Vaughan
>> Sent: woensdag 6 juli 2011 18:04
>> To: Programming forum
>> Subject: Re: [Jprogramming] Large numbers
>> 
>> Could you post your input please? I gave p after waiting another 30 minutes.
>> :/
>> I am also curious about the 6!:2 function.
>> I might input something, and it takes maybe 1 second between my pressing
>> enter and the result being displayed, but if I time it with 6!:2, it tells 
>> me it only
>> took 0.0005394 seconds (or a similar number).
>> What's the reason for this indiscrepancy?
>> ___________________________
>> 
>> David Vaughan
>> 
>> On 6 Jul 2011, at 16:45, Ben Gorte - LR <[email protected]> wrote:
>> 
>>> FWIW, bc on my old linux laptop computed it in the last 5 minutes.
>>> 2357207 digits indeed (should I post them?)
>>> 
>>> Ben
>>> 
>>>> -----Original Message-----
>>>> From: [email protected] [mailto:programming-
>>>> [email protected]] On Behalf Of David Vaughan
>>>> Sent: woensdag 6 juli 2011 17:33
>>>> To: Programming forum
>>>> Subject: [Jprogramming] Large numbers
>>>> 
>>>> Hi, what's the largest number J can compute?
>>>> I'm looking to compute 28433 * 2^7830457 + 1, which has 2357207 digits. I
>>>> started calculating it, but it's taking a very long time (obviously), an 
>>>> I'm
>>>> wondering how long it's likely to take, and whether it's even possible.
>>>> 
>>>> Thanks.
>>>> ___________________________
>>>> 
>>>> David Vaughan
>>>> ----------------------------------------------------------------------
>>>> For information about J forums see
>> http://www.jsoftware.com/forums.htm
>>> ----------------------------------------------------------------------
>>> For information about J forums see
>> http://www.jsoftware.com/forums.htm
>> ----------------------------------------------------------------------
>> For information about J forums see http://www.jsoftware.com/forums.htm
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
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