What is a good book to learn number theory?

elementary-number-theory number-theory reference-request soft-question

What would be a good book to learn basic number theory? If possible a book which also has a collection of practice problems? Thanks.


Solution 1:

My two-pennyworth:

  1. John Stillwell, Elements of Number Theory (Springer 2002). This is by a masterly expositor, and is particularly approachable.
  2. G.H. Hardy and E.M. Wright, An Introduction to the Theory of Numbers (OUP 1938, and still going strong with a 6th edition in 2008). Also aimed at beginning undergraduate mathematicians and pleasingly accessible.
  3. Alan Baker, A Comprehensive Course in Number Theory (CUP 2012) is a nice recent textbook (and a lot shorter than its title would suggest, too).

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