Prime palindromic numbers

Remember that a natural number is called prime if and only if has only two divisors: 1 and itself. Moreover, a natural number is called palindromic if its value is the same when its digits are reversed. For instance, 146641 is a palindromic number but 164361 is not.

Write a program that prints the $i$-th prime palindromic number.

Input

Input is a sequence of integer numbers between 1 and 750 (both included).

Output

For each integer $i$ of the sequence, print in a line with the $i$-th prime palindromic number.

Problem information

Author: Unknown
Translator: Carlos Molina

Generation: 2026-01-25T10:38:04.310Z

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