Skip to main content
5 events
when toggle format what by license comment
Sep 30, 2014 at 18:21 comment added Christopher D. Long That should be Louis Marmet. My code combined with the various modular restrictions could easily extend the current bound. But the conjecture is almost certainly true - the "mixing" appears to be good enough that there could be nice asymptotics.
Sep 28, 2014 at 13:51 comment added Gerry Myerson 1. I don't see any Mamet above, though I do see a Marmet below. 2. So does this mean you are able to extend the bounds reported some years ago?
Sep 28, 2014 at 13:38 comment added Christopher D. Long There are some severe modulus restrictions on values of $n$ that could have unique solutions, so you only need to check a tiny fraction. Louis Mamet (mentioned above) discusses this in some detail. Also, once you find one additional solution beyond $\{2,n-2\}$ you can stop looking for more.
Sep 27, 2014 at 23:52 comment added Gerry Myerson If it takes 10 seconds to find all solutions for $n=10^9$, then it would take something like $10^{11}$ seconds to find all solutions for all $n$, $1\le n\le10^{10}$. But comments elsewhere on the problem suggest that that calculation and more were done some years ago, so they must have had something much faster.
Sep 27, 2014 at 18:04 history answered Christopher D. Long CC BY-SA 3.0