Things have been a little quiet lately on this blog; I was away for a bit on vacation, and I’m still catching up on some things, and I know Vishal has been busy. Hopefully we’ll have more posts soon.

In any case, it’s high time for another Problem of the Week! This one is undoubtedly classical in nature, but may require a famously nontrivial result to solve quickly by hand:

Find the length of the period of the repeating decimal representation of

Please submit solutions to **topological[dot]musings[At]gmail[dot]com** by **Friday, August 29**, 11:59 pm (UTC); do **not** submit solutions in Comments. Everyone with a correct solution will be inducted into our Hall of Fame! We look forward to your response.

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August 30, 2008 at 5:57 am

Solution to POW-9: Period of a decimal expansion « Todd and Vishal’s blog[...] (POW) | Tags: quadratic reciprocity | by Todd Trimble The solutions are in! Last week’s POW-9 is a problem for which you need a bit of insight to solve at all (even with calculator or [...]

October 2, 2008 at 4:12 pm

My solution to the Problem Of the Week-9 [Todd and Vishal's blog]: Period of a decimal expansion « problemas | teoremas[...] Math, pdf — Américo Tavares @ 5:12 pm I submitted a solution to the following Problem that was [...]

October 6, 2008 at 2:44 pm

Versão portuguesa da minha resolução do «Problem Of the Week-9 [Todd and Vishal's blog]»: Período de uma dízima « problemas | teoremas[...] Números, pdf — Tags:Matemática, pdf — Américo Tavares @ 3:44 pm A resolução do Problema a seguir enunciado foi [...]

March 3, 2009 at 9:03 am

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