Several users contributed recommendations for introductory texts on number theory. Notable suggestions include Dudley's "Elementary Number Theory," which is affordable and accessible as a Dover paperback. Other resources mentioned are MIT's course "18.781 Introduction to Number Theory" and Davenport's "The Higher Arithmetic." Additionally, Ogilvy and Anderson's "Excursions in Number Theory" was highlighted as a more informal exploration of the subject. A link to a collection of number theory books was also provided for further exploration.