Re: Writing prime factor decomposision in conventional form

• To: mathgroup at smc.vnet.net
• Subject: [mg65345] Re: Writing prime factor decomposision in conventional form
• From: Paul Abbott <paul at physics.uwa.edu.au>
• Date: Mon, 27 Mar 2006 06:56:20 -0500 (EST)
• Organization: The University of Western Australia
• References: <e05ri1\$3ru\$1@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

```In article <e05ri1\$3ru\$1 at smc.vnet.net>,
"Dr. Wolfgang Hintze" <weh at snafu.de> wrote:

> How can I get a conventional form output for the prime number
> decomposition, e.g. {{2,3},{5,1}} as 2^3 5 ?
>
> I have found some (rather cumbersome) method but it leaves the final
> expression in "" when I put it into input format in order to transfer it
> in simple text form to another application.
>
> I'm sure that there is a simple way to achieve the goal.
>
> Any idea is greatly appreciated.

This is a FAQ, as you will see if you do a search on

FactorInteger format

main idea is to use HoldForm and ReleaseHold. Here is one solution:

FactorInteger[238500]

Times @@ Apply[Power, Map[HoldForm, %, {2}], {1}]

ReleaseHold[%]

Cheers,
Paul

_______________________________________________________________________
Paul Abbott                                      Phone:  61 8 6488 2734
School of Physics, M013                            Fax: +61 8 6488 1014
The University of Western Australia         (CRICOS Provider No 00126G)
AUSTRALIA                               http://physics.uwa.edu.au/~paul

```

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