On Wed, Jul 24, 2013 at 10:18 PM, юрий герасимов <2stepan at rambler.ru> wrote: > > Hello, SegFans, > > Prime(n) such that 2*n^2 - prime(n) is square: > > 2, 7, 17, 71,... > > What is the next one ? > > The values of prime(n) with this property up to 6*10^6 are 2, 7, 17, 71, 6607, 15313, 91801, 141689, 443777, 858463, 1353593, 2345479