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The theorem is set as a problem in myIntroduction to Number theory, Stockholm and New York 1951 (Problem 165, p. 272).
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Nagell, T. The Diophantine equationx 2+7=2n . Ark. Mat. 4, 185–187 (1961). https://doi.org/10.1007/BF02592006
- Positive Integer
- Number Theory
- Mathematical Society
- Lower Sign
- American Mathematical Society