How many hieroglyphic numerals are there?

Virtually all numbers can be made from various combinations of the 7 Roman numerals. I (1) V (5) X (10) L (50) C (100) D (500) and M (1000).-- further --Adding a bar above any of the standard...

infinity

There are 7 commonly used Roman numerals... I (1), V (5), X (10), L (50), C (100), D (500) and M (1000).

In our number system one million is written 1,000,000 so there are 6 zeros. The Roman's wrote one million as (M), where M = one thousand and the brackets mean times one thousand.

10000 ; This may look to be wrong but you can have 0001 to 9999 which gives you 9999 different combinations of 4 digits, plus another one for 0000.