Description

A natural number is called an absolute prime if it is a prime number and remains prime when its digits are swapped. For example, 13 is an absolute prime because both 13 and 31 are primes. Write a program to find all two-digit absolute primes.

Input Format

(None)

Output Format

All two-digit absolute primes listed in ascending order, one number per line.

11
13
17
31
37
71
73
79
97

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