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Sunday Times Teaser 2489 – No Title

by Victor Bryant

Published June 6 2010 (link)

Your task today is to put more than two digits evenly spaced around a circle so that:

Any three adjacent digits clockwise form a prime number.

Any three adjacent digits anti-clockwise form a prime number.

If a digit occurs in the circle, then it occurs a prime number of times;

The total of all the digits around the circle is a prime.

What is the total of all the digits?

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  1. Brian Gladman permalink

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