A palindrome is a number or text phrase that reads the same backwards as forwards. The integer

$454$ is an example of a three$-$digit palindrome because the first and last digits are a match. $2442$

is an example of a four$-$digit palindrome because the first digit matches the last digit and the

second digit matches the third digit. $12321$ is an example of a five$-$digit palindrome and $246642$

is an example of a six$-$digit palindrome.