Number Theory for Computing

Pure Mathematics for Beginners: A Rigorous Introduction to Logic, Set Theory...

Elementary Number Theory by Kenneth Rosen (2010, Hardcover)

Polyvagal Theory for Complete Beginners: A Quick-Start Guide to Understanding Yo

Number Theory for Beginners by Weil

Number Theory for Beginners: By Andrew Weil with Collaboration of Rosenlicht

Number Theory for Beginners by Weil, Andre [Paperback]

Friendly Introduction To Number Theory (4th Edition) By Joseph H. Silverman