BrainBashers : Number Of The Day



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Today is Day 170 of 2013

170	is the smallest number n for which phi(n) and sigma(n) are both square.

Many thanks are extended to Archimedes' Lab for their information.

170

Today is day number of 2013. Below are various representations of the number 170, some dating thousands of years, and some very modern.

Many thanks are extended to Jo Edkins for her wonderful work.

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