Timeline for Does the equation $x^2+x=a$ have an integer solution?
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| when toggle format | what | by | license | comment | |
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| Dec 25, 2017 at 0:54 | comment | added | Noam D. Elkies | For this quadratic case, once you invoke quadratic reciprocity you don't even need Dirichlet's theorem, as I already noted in this forum back in 2013: mathoverflow.net/questions/135820 | |
| Dec 24, 2017 at 10:41 | history | answered | Wojowu | CC BY-SA 3.0 |