Meme

• Grab the nearest book.
• Open it to page 56.
• Find the fifth sentence.
• Post the text of the sentence in your journal along with these instructions.
• Don’t dig for your favorite book, the cool book, or the intellectual one: pick the CLOSEST.

That's in German:

Wenn diese beiden Kongruenzen nicht erfüllt sind, ist g eine Primitivwurzel mod p.

and in English:

If those two congruencies are not valid, g is a primitive root mod p.

This is about prime residue groups, in number's theory.
The book is 'Einführung in die Kryptograhpie' by Buchmann.