To use RSA encryption on words, the computer first must convert the letter into a number. To do this, it uses a system called ASCII $($American Standard Code for Information Interchange$)$ which assigns a decimal value to each letter. Here are the ASCII codes for uppercase letters A $-$ Z:

A B C D E F G H I J K L M

$65666768697071727374757677$

N O P Q R S T U V W X Y Z

$78798081828384858687888990$

A five letter word was converted to decimal values, then encrypted using the RSA public key e $=5,$ n $=5963.$ The encrypted message was:

$55305287509320424109$

Decrypt this message back to letters using the private key d $=3485.$