E-Class

E-Class is related to the number of digits in a number. E-Class 0 numbers include numbers from 1 to 10 always excluding the last number. In this case, 10 is actually an E-Class 2 number but 9.999 is still an E-Class 1 number.

To find the ranges of each class, take the number after the word E-Class and bring 10 to it's power. This number is the smallest possible value of that class. For example, E-Class 4's smallest number would be 10^4 or 10,000. The largest number will always be just less than 10 times the smallest number.