How many zeros in factorial googol?

Answer 1

Googol is not a real number, but supposedly, it is a 1 with 100 zeros behind it. Which would not make sense since any significant type number would have the number of zeros divisible by 3. Such as the number 1 with 303 zeros behind it which is the number centillion.

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Not true. A googol is a real number and it does have 100 zeros.

A hundred is a significant number the number of zeros is not divisible by 3!

What you need to do is as follows (G = googol):

The number of times 5 goes into G = 2*1099 - that gives 2*1099 0s.

The number of times 52 goes into G = 4*1098 - that gives another 4*1098 0s.

The number of times 53 goes into G = 8*1097 - that gives another 8*1097 0s.

and so on, all the way down to

The number of times 5143 goes into G = 100 = 1.11 - that gives another 1 0s.

All in all, that makes nearly 2.5*1099 or a quarter of a googol 0s.