How do I write stacked up exponents? For example, I tried doing `$2^2^65533$`

and it yelled at me š

I know about `\uparrow`

but it's not what I am looking for.

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# [Tex/LaTex] How to write Superexponents

errorssuperscripts

How do I write stacked up exponents? For example, I tried doing `$2^2^65533$`

and it yelled at me š

I know about `\uparrow`

but it's not what I am looking for.

## Best Answer

If you nest several super/subscripts, you should disambiguate the writing since it is not clear (for LaTeX) if you want to write

`(2^2)^65533`

or`2^(2^65533)`

.You should therefor use curly brackets around the argument of the power function for having an unequivocal notation.

In your case, you should write

`$2^{2^{65533}}$`

_{(note that $2^{2^65533}$ is also ok, since it is already unequivocal)}The right use of the exponent function is

`^{<argument>}`

(e.g.`$e^{i\pi}$`

).However, if your argument is one character-long only, you can use the shorthand

`^<argument>`

(i.e. without curly brackets, e.g.`$2^4$`

). Thus, youcannotwrite`$2^{2^65533}$`

, even if it's mathematically unequivocal.