discussing the count of a large number of objects, such as stars in the Observable Universe, the focus is not on calculating their literal quantity down to the last star. In such cases, understanding the order of magnitude is sufficient. It is considered that the number of stars in the Observable Universe is a figure with 22 digits, which is more conveniently represented as one followed by 21 zeros and written as 10 to the power of 21.

Moreover, this is a lower estimate. This means that there could be

as few as

or as many as

1 000 000 000 000 000 000 000,

9 999 999 999 999 999 999 999

The number of unique chess games, known as the Shannon number.

If you increase the power to 122, that's precisely the number of protons needed to fill the Observable Universe, proton to proton, snugly packed.

Move

Click and move

Click and move