[Date Index] [Thread Index] [Author Index]

Re: Misprint

• To: mathgroup at smc.vnet.net
• Subject: [mg111102] Re: Misprint
• From: "Alexey Popkov" <lehin.p at gmail.com>
• Date: Tue, 20 Jul 2010 03:44:25 -0400 (EDT)
• References: <i20q4h$kdt$1@smc.vnet.net>

I apologize. It is my typo: I wrote 2^26972593 instead of 2^6972593.


"Ken Levasseur" <klevasseur at mac.com>  news:i20q4h$kdt$1 at smc.vnet.net...
> Alexey
>
> You added a 2 to the base of the expression
>
> Ken
>
> Sent from my iPad
>
> On Jul 18, 2010, at 1:05 AM, Alexey <lehin.p at gmail.com> wrote:
>
>> Hello,
>>
>> It seems that there is a misprint on the page
>> http://www.wolfram.com/products/mathematica/usersanduses/mersenne.html
>> We read that "In June 1999 an international group of mathematicians,
>> computer scientists, and hobbyists <...> discovered that 2^6972593-1
>> is
>> prime." But it is not true:
>> In[3]:= PrimeQ[2^26972593 - 1]
>> Out[3]= False
>>
>
>