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PUZZLET 171

Primes from Prime Digit Rotations

To find a 5-digit Prime which remains Prime when its digits are rotated through all 5 positions.

Rotations work like this, taking the rightmost digit and placing it at the left-hand end: abcde, eabcd, deabc, cdeab, bcdea. There are only 5 rotations for a 5-digit integer.


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Last Updated: January 16th, 2010.