Re: primorial operator '#' for GP?

I would definitely use a # operator if it were added. But I don’t mind the
decision to leave the operator space clean; there are a lot of use cases
for PARI/GP and clutter is a real concern.

On Wed, Sep 27, 2023 at 8:15 AM <[email protected]> wrote:

> On 2023-09-25 10:09, Bill Allombert wrote:
> > Better do
> >
> > ? vecprod(primes([1,11]))
> > %1 = 2310
> >
> OK, I will use this for now:
>
> ? primorial(x)=vecprod(primes([1,x]));
> ? primorial(11)
> %4 = 2310
> ?
>
>
> >> Any chance to see "#" as operator in GP like "!"?
> >> ? 11#
> >>   ***   syntax error, unexpected '#', expecting end of file: 11#
> >>   ***                                                          ^-
> >
> > I suppose we could add a primorial() function but adding a new operator
> > would
> > be a bit too much.
> >
> There are 160 matches for "#" in list of 5000 largest primes:
> https://t5k.org/primes/lists/all.txt
>
>
>   rank  description                     digits   who   year comment
> -----  ------------------------------- -------- ----- ----
> --------------
> ...
>    456  3267113#-1                       1418398 p301  2021 Primorial
> ...
>   5740  113225039190926127209*2339#/57057+7
>                                             1002 c88   2021 Septuplet (3)
> ...
>
>
> I understand the "a bit too much" statement.
> But it would be nice if just copying 2nd column "as is" would work in GP
> ...
>
>
> Regards,
>
> Hermann.
>
>