Single Digit Representations of Natural Numbers From 20001 to 30000

There are different ways of representing natural numbers, such as writing in terms of 1 to 9 or 9 to 1, writing in terms of single letter, single digit, flexible power, etc. These types of representations we call as crazy representations. This paper bring numbers 20001 to 30000 in terms of digits 1 to 9. For the representations of the the numbers from 1 to 20000 refer author's previous work (first, second, third and forth)