Number theory book to study Can anyone please recommend me a good number theory book to read? I want lots of answers to get a good idea. I am a 1st year university student, so it would be good if there are no deep terms and the theory is explained well.
What is a good book to learn number theory? What would be a good book to learn basic number theory? If possible a book which also has a collection of practice problems? Thanks.
What is the lowest level of mathematics required in order to understand how encryption algorithms work? What mathematical fields of knowledge would be required in order to get a good understanding of encryption algorithms?   Is it basic algebra, or is there a "higher education" mathematical field dedicated to encryption? I know there is the cryptography field, but what is the subset of knowledge required for cryptographers?