24724 Giedrius Alkauskas: A curious proof of Fermat's little theorem.
Am. Math. Monthly 116/4 (2009), 362-364.

R. Allenby/E. Redfern: Introduction to number theory with computing.
Arnold 1989. 0-71313661-8.

James Anderson/James Bell: Number theory with applications.
Prentice Hall 1997. 0-13-190190-7. $67.

10582 George Andrews: Number theory. Dover 1994.

W. Anglin: The queen of mathematics. An introduction to number theory.
Kluwer 1995, 390p. Pds. 97.

171 Tom Apostol: Introduction to analytic number theory. Springer 1976. 

25244 Tom Apostol: Review of the book "Number theory" by W. Narkiewicz. MR 748136.

A. Ash/R. Gross: Fearless symmetry - exposing the hidden patterns
of numbers. Princeton UP 2006, 270p. $25.

23297 Alan Baker: A comprehensive course in number theory. Ebook. Eur 16.

Paul Bateman/Harold Diamond: Analytic number theory. World Scientific 2004, 380p. $42.

1882 S. Borevich/I. Shafarevich: Zahlentheorie. Birkhaeuser 1966.

Kathrin Bringmann/Yann Bugeaud/Titus Hilberdink/Jürgen Sander: Four faces
of number theory. EMS 2015, 200p. Eur 32.

8391 Joerg Bruedern: Einfuehrung in die analytische Zahlentheorie. 
Springer 1995, 240p. DM 68.

A. Bukhshtab: Teoria chisel. Moscow 1966.

1881 Peter Bundschuh: Einfuehrung in die Zahlentheorie. Springer 1988. 

25180 Dietrich Burde: Analytische Zahlentheorie. Internet 2005, 110p.

R. Burn: A pathway into number theory. Cambridge UP 1997. 0-521-57540-0. $28.

25353 David Burton/Heinz Dalkowski: Handbuch der elementaren Zahlentheorie.
Heldermann 2005, 750p. Eur 68.

23207 Peter Cameron: A course on number theory. Internet 2009, 139p.

19647 Robert Carmichael: The theory of numbers.
Project Gutenberg 2004, 85p.

D. Chudnovsky/G. Chudnovsky/H. Cohn/M. Nathanson: Number theory.
Seminar Univ. Center City Univ. NY 1989-1990.
Springer 1991, 280p. 3-540-97670-1. DM 64.

20976 Henri Cohen: Number theory I. Tools and diophantine equations.
Springer 2007, 650p. Eur 54.

21005 Henri Cohen: Number theory II. Analytic and modern tools.
Springer 2007, 600p. Eur 54.

Joseph Dauben: Review of the book "The universal history of numbers
and the universal history of computing" by Georges Ifrah.
Notices AMS February 2002, 211-216.

H. Davenport: The higher arithmetic. An introduction to the theory of numbers.
Cambridge UP 1992, 220p. 0-521-42227-2 (pb). Pds. 13.

23718 Jean-Marie De Koninck/Florian Luca: Analytic number theory.
AMS 2012, 410p. Eur 73.

4589 Leonard Dickson: Einführung in die Zahlentheorie. Teubner 1931.

4589 L. Dickson: Einfu''hrung in die Zahlentheorie. De Gruyter 1931.
[engl. Introduction to the theory of numbers.]

1909 Leonard Dickson: History of the theory of numbers.
3 volumes. Chelsea 1971.

1406 Heinz-Dieter Ebbinghaus u.a.: Zahlen. Springer 1983.

25851 Philippe Ellia: Teoria dei numeri. Internet (Univ. Ferrara) 2014, 150p.

25241 Ronald Evans: Review of the book "Classical problems in number theory"
by W. Narkiewicz. MR 961960.

Daniel Flath: Introduction to number theory. Wiley 1988, 210p.

16015 Otto Forster: Algorithmische Zahlentheorie. Vieweg 1996, 280p. Eur 33.

120 Gerhard Frey: Elementare Zahlentheorie. Vieweg 1984.

22466 Carl Friedrich Gauß: Disquisitiones arithmeticae. Internet, 480p.

8579 Kurt Girstmair: Periodische Dezimalbrüche - was nicht jeder
darüber weiß. In 8567 Beutelspacher/, 163-179.

L. Goldstein: Analytic number theory. Prentice Hall 1971.

1910 Karl-Bernhard Gundlach: Einführung in die Zahlentheorie.
Bibl. Inst. 1972.

1906 Richard Guy: Unsolved problems in number theory. Springer 1981.

12310 Richard Guy: Nothing's new in number theory?
Am. Math. Monthly December 1998, 951-954.

25403 Godrey Hardy/E. Wright: An introduction to the theory of numbers.
Oxford UP 2008, 620p. Eur 45.

1787 Helmut Hasse: Zahlentheorie. Akademie-Verlag 1949.
Esistono edizioni piu' nuove, con molte aggiunte.

3273 Helmut Hasse: Vorlesungen ueber Zahlentheorie. Springer 1950.

25370 A. Hildebrand: Introduction to analytic number theory. Internet 2007, 197p.

177 Edmund Hlawka/Johannes Schoissengeier: Zahlentheorie.
Manz 1979.

172 Edmund Hlawka/Johannes Schoissengeier/Rudolf Taschner: Geometrische und 
analytische Zahlentheorie. Manz 1986.

1913 Edmund Hlawka (ed.): Zahlentheoretische Analysis. SLN Math. 1114 (1985). 

1914 Edmund Hlawka (ed.): Zahlentheoretische Analysis 2.
SLN Math. 1262 (1987).

1907 Loo-Keng Hua: Introduction to number theory. Springer 1982.

Adolf Hurwitz: Lectures on number theory.
Springer 1986, 270p. 3-540-96236-0. DM 76.

25352 Kenneth Ireland/Michael Rosen: A classical introduction to number theory. 
Springer 2003, 390p. Eur 67.

4659 Friedrich Ischebeck: Einladung zur Zahlentheorie. 
Bibl. Inst. 1992.

18262 Henryk Iwaniec/Emmanuel Kowalski: Analytic number theory.
AMS 2004, 610p. Eur 108. "... an important comprehensive account
of modern analytic number theory." (A. Zaharescu)

Gary Jones/J. Mary Tyrer-Jones: Elementary number theory.
Springer 1998, 300p. 3-540-76197-7. DM 49.

A. Karatsuba: Basic analytic number theory.
Springer 1993, 220p. DM 164. A reviewer recommends it warmly, but I cannot 
agree with such prices for a book on number theory with 220 pages.

Klee/Wagon: Old and new unsolved problems in plane geometry and number theory. 
Mathematical Ass. of America 1991, 330p.

1948 Neal Koblitz: A course in number theory and cryptography.
Springer 1987.

471 Ekkehard Krätzel: Zahlentheorie. Berlin 1981.

Ekkehard Krätzel: Analytische Funktionen in der Zahlentheorie.
Teubner 2000, 290p. DM 92.

1901 Leopold Kronecker: Vorlesungen ueber Zahlentheorie. Erster Band.
Springer 1978.

R. Kumanduri/Cristina Romero: Number theory with computer applications.
Prentice Hall 1997.

25245 Angel Kumchev: Review of the book "Rational number theory in the 20th century"
by W. Narkiewicz. MR 3014464.

1921 Edmund Landau: Vorlesungen ueber Zahlentheorie. 3 volumes.
Hirzel 1927.

11614 Adrien-Marie Legendre: Theorie des nombres. 2 volumes. Blanchard 1955.

Armin Leutbecher: Zahlentheorie.
Springer 1996, 350p. 3-540-58791-8. DM 48.

Winnie Li: Number theory with applications.
World Scientific 1995, 300p. 981-02-2226-2. $53.

5058 Klaus Mainzer: Natuerliche, ganze und rationale Zahlen.
1406 Ebbinghaus/, 9-22.

3480 Paul McCarthy: Introduction to arithmetical functions.
Springer 1986.

21018 Steven Miller/Ramin Takloo-Bighash: An invitation to modern number theory.
Princeton UP 2006, 500p. Eur 45.

22429 Richard Mollin: Fundamental number theory with applications.
Chapman & Hall 2008, 370p. Eur 70.

19048 Stefan Müller-Stach/Jens Piontkowski: Elementare und algebraische
Zahlentheorie. Vieweg 2006, 240p. Eur 20.

3544 K. Nagasaka/E. Fouvry (ed.): Analytic number theory.
SLN Math. 1434 (1990).

Wladyslaw Narkiewicz: Classical problems in number theory. PWN Warsaw 1986, 360p.

21038 Wladyslaw Narkiewicz: Rational number theory in the 20th century.
Springer 2012, 650p. Eur 105.

Melvyn Nathanson (ed.): Number theory Carbondale 1979. Springer LN Math. 751 (1979).

Donald Newman: Analytic number theory.
Springer 1997. 3-540-98308-2. $30.

3573 Ivan Niven/Herbert Zuckerman: Einfuehrung in die Zahlentheorie.
2 volumes. Bibl. Inst. 1991.

5735 C. Ogilvy/J. Anderson: Excursions in number theory. Dover 1988.

798 Oystein Ore: Number theory and its history. Dover 1976.

25922 Marius Overholt: A course in analytic number theory. AMS 2014, 370p. Eur 70.

21004 Friedhelm Padberg: Elementare Zahlentheorie. Spektrum 2008, 300p. Eur 22.

23222 Friedrich Pillichshammer: Eine Einführung in die Zahlentheorie.
Vorl. Univ. Linz 2011, 220p.

H. Rademacher: Topics in analytic number theory. Springer 1973.

M. Ram Murty: Problems in analytic number theory.
Springer 2001, 450p. Eur 59.

Don Redmond: Number theory. Dekker 1996, 750p. 0-8247-9696-9. $175.
I find such prices not responsible.

C. Reid: From zero to infinity. 
MAA 1992, 180p. 0-88385-505-4. Pds. 16.
"One of the best books in popular mathematical literature," says a reviewer.

Kristina Reiss/Gerald Schmieder: Basiswissen Zahlentheorie.
Springe 2004, 470p. Eur 25.

8566 Georg Johann Rieger: Zahlentheorie.
Vandenhoeck & Ruprecht 1976, 220p. 3-525-40138-8. DM 49.

Joe Roberts: Elementary number theory. MIT Press 1977.

25545 Joe Roberts: Lure of the integers. MAA 1992, 310p. Eur 40.

H. Rose: A course in number theory.
Oxford UP 1995, 410p. 0-19-853479-5.
" ... kann in die Liste der ... guten Einführungen in die
Zahlentheorie eingereiht werden ... ein weiteres Kapitel über
elliptische Kurven ... Geschlechtertheorie quadratischer Formen ...
Beweise der Sätze von Hermite und Lindemann, des Satzes von
Gelfond-Schneider, des Dirichletschen Primzahlsatzes und des Primzahlsatzes
selbst ... " (F. Schweiger)

K. Rosen: Elementary number theory and its applications.
Addison-Wesley 1988.

25278 Jozsef Sandor/Borislav Crstici: Handbook of number theory II.
Springer 2005, 640p. Eur 141.

25277 Jozsef Sandor/Dragoslav Mitrinovic/Borislav Crstici: Handbook of
number theory I. Springer 2006, 640p. Eur 132.

3286 Arnold Scholz/Bruno Schoeneberg: Einführung in die Zahlentheorie.
De Gruyter 1966.

23305 Wolfgang Schwarz: Aus der Geschichte der Zahlentheorie.
Vorl. Univ. Frankfurt 2001, 100p.

25306 Waclaw Sierpinski: Elementary theory of numbers. North-Holland 1988, 510p. Eur 54.

N. Sloane/S. Plouffe: The encyclopedia of integer sequences.
Academic Press 1995, 590p.  0-12-558630-2. $45.

Craig Smorynski: Logical number theory. Springer 1991, 410p.

11613 Harold Stark: An introduction to number theory.
MIT Press 1987, 340p. Eur 33.

21017 William Stein: Elementary number theory - primes, congruences,
and secrets. Springer 2009, 170p. Eur 39.

B. Stewart: Theory of numbers. MacMillan 1964. Good introduction.

29060 Jakob Stix: Elementare Zahlentheorie. Skriptum Univ. Frankfurt 2017, 150p.

J. Stopple: A primer of analytic number theory. Cambridge UP 2003, 380p. Pds 23.

James Tattersall: Elementary number theory in nine chapters.
Cambridge UP 1998. 0-521-58531-7 (pb). $25.

1900 I. Vinogradov: Elemente der Zahlentheorie. Berlin 1955.

1928 I. Vinogradov: Metod trigonometricheskikh summ v teorii chisel.
Moscow 1971.

1935 N. Vorobev: Chisla Fibonacci. Moscow 1969.

4740 M. Waldschmidt/P. Moussa/J. Luck/C. Itzykson (ed.): From number theory
to physics. Springer 1992.

R. Walters: Number theory. An introduction. 
Carslaw, Sydney 1987. 0-9589105-6-1.

25984 Andre' Weil: Two lectures on number theory, past and present.
Ens. Math. 20/1-2 (1974), 87-110.

1868 Andre' Weil: Number theory. Birkhaeuser 1984.

Martin Weissman: An illustrated theory of numbers. AMS 2017, 320p. Eur 74.

18030 Alexandru Zaharescu: Review of the book "Analytic number theory"
by Iwaniec/Kowalski. Bull. AMS 43/2 (2006), 273-278.

25243 ZZ: Contents of the book "Teoria liczb (Number theory)" by W. Narkiewicz.
MR 0554186.