Some things that you may need to know about how to indicate the number systems that you are using, with this we write the number in the system, followed by a subscript number to indicate the base. So for example 6510, often the subscript is missing which indicates that it is the native base to the one who wrote the number. 65 as written would be 6 tens, and 5 ones. However, written as 658 would be 6 eights, and 5 ones; or the same as 53 in base 10.