The method I use for displaying numbers in various bases is described below. I use the Alternate Number System for both the number and the digits. Therefore, digits 1 to the base are allowed. The digits of a number are in base ten (A). The base of the number is in brackets after the number. Numbers with bases greater than ten require a digit separator (decimal point). The use of a decimal point as a separator, will not be confused with the traditional decimal point, since these pages only address positive integers. Numbers with a base less than eleven do not require separators since single digit symbols are used.
For example, a 5 digit number in base 21 is 1.14.4.21.11(21)
and a 6 digit number in base 17 is 13.2.7.11.1.17(17)
and a 7 digit number in base 8 is 8253528(8)
one more, an 8 digit number in base A is 43257A32(A)