Corrected On sequence nXn where x equal 09,18,27,36,45,54,63,72,81,90

[Karima MOUSSAOUI]

Dear,
Is not arithmetixc progression
example
1091, 1181, 1271, 1361 , ... is not arithmetic progression

Thanks







> Message du 23/02/04 18:43
> De : Ed Pegg Jr 
> A : Meeussen Wouter (bkarnd) 
> Copie à : bouyao at wanadoo.fr, seqfan at ext.jussieu.fr
> Objet : Re: Corrected On sequence nXn where x equal 09,18,27,36,45,54,63,72,81,90
> These are ten numbers in arithmetic progression.
> 
> At least one of these numbers will be divisible by 7.
> 
> --Ed Pegg Jr
> 
> Meeussen Wouter (bkarnd) wrote:
> 
> >not within the lowest 10^5 trials:
> >test = ToString@{n09n, n18n, n27n, n36n, n45n, n54n, n63n, n72n, n81n, n90n};
> > 
> > Select[Range[100000], 
> > And @@ PrimeQ[ToExpression[StringReplace[test,
> > "n" -> ToString[#]]]] &]
> > returns the empty list
> > {}
> >
> >W.
> >
> >(Please, send plaint text)
> >
> >
> >
> >-----Original Message-----
> >From: Karima MOUSSAOUI [mailto:bouyao at wanadoo.fr]
> >Sent: maandag 23 februari 2004 18:16
> >To: seqfan at ext.jussieu.fr
> >Subject: Corrected On sequence nXn where x equal 09,18,27,36,45,54,63,72,81,90
> >
> >
> >Dear Seqfna,
> >Can anyone find n such that n09n, n18n,n27n,n36n,n45n,n54n,n63n,n72n,n81n,n90n, are all primes
> >where n09n designe concatenation of (n 09 n) (example 1091 is prime, 310931 is prime)
> >Thanks
> >M.Bouayoun
> >
> >
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> > 
> >
> 
>
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