Hello,
my name is Karsten Meyer and i am author in Citizendium. I wrote on articles to pseudoprimes. But i have things to prime numbers and pseudoprimes, i would not integrate in articles in Citizendium, because i am not sure about origin research. What i wrote, and in future write, in
http://en.citizendium.org/wiki/User:Karsten_Meyer/Brainstorming is correct ("Ich lage dafür meine Hand ins Feuer"), but i wouldn't find sources for that.
If some of this is useful for an article, the use ist.
Karsten Meyer