Re: Looking for n for which all 2-partitions are prime partitions.

*To*: mathgroup at smc.vnet.net*Subject*: [mg60293] Re: Looking for n for which all 2-partitions are prime partitions.*From*: Peter Pein <petsie at dordos.net>*Date*: Sat, 10 Sep 2005 06:46:42 -0400 (EDT)*References*: <dfrgjr$fq8$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Gilmar schrieb: > Dear Mathematica User Group: > > Is it possible to find an even number n => 4 such that the values > (n - Prime[i]) are primes for ALL integers i in the interval > [1, PrimePi[n/2]]? ... > Thank you for your help! > Gilmar, if n is even, let i=1. Then Prime[i]=2 and n-Prime[i] is even too. => No -- Peter Pein, Berlin GnuPG Key ID: 0xA34C5A82 http://people.freenet.de/Peter_Berlin/