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Mar 7, 2016 at 17:46 comment added Tito Piezas III Just for info, we have the fundamental solution to the Pell equation, $$x^2-163\cdot640320y^2=1$$ as $\displaystyle x=2u+1,\; y = \sqrt{\frac{4\cdot640320^2v}{163\cdot12^3}},$ and where, $$u = 151931373056000\\ v = 151931373056001$$
Nov 24, 2013 at 5:49 answer added Noam D. Elkies timeline score: 27
Nov 24, 2013 at 5:08 vote accept Greg Martin
Nov 24, 2013 at 4:23 history edited Greg Martin CC BY-SA 3.0
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Nov 24, 2013 at 4:23 comment added Greg Martin You're definitely right. Thought I'd snuck an $i$ in there. fixed now
Nov 23, 2013 at 10:10 answer added Tim Dokchitser timeline score: 34
Nov 23, 2013 at 9:02 comment added joro Is sqrt(163) typo? Maybe sqrt(-163) ?
Nov 23, 2013 at 8:35 history asked Greg Martin CC BY-SA 3.0