Elementary Number Theory
Kenneth H. Rosen
Friendly Introduction To Number Theory, A
Joseph Silverman
Reading, Writing, and Proving
Ulrich Daepp
Mathematical Puzzles
P. Winkler
Algebraic Number Theory and Fermat's Last Theorem
Ian Stewart
Cryptography
Douglas R. Stinson
Topics in Number Theory
Jorge Morales
All the Math You Missed
Thomas A. Garrity
Algebraic Number Theory For Beginners
John Stillwell
Number Theory Arising From Finite Fields
John Knopfmacher
Exponential Sums, Hypergeometric Sheaves, and Monodromy Groups
Nicholas M. Katz
Some Problems of Unlikely Intersections in Arithmetic and Geometry
U. Zannier
Prime Suspects
Andrew Granville
Numbers and the Making of Us
Caleb Everett
Number Theory
George E. Andrews
Elementary Number Theory
Underwood Dudley
Love and Math
Edward Frenkel
The Book of Numbers
John H. Conway
Introduction To Elliptic Curves and Modular Forms
Neal Koblitz
Introduction To Analytic Number Theory
Tom M. Apostol