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I was taking a test and this was a question. It does not mean $3^3$, nor is it a typo. The superscript was before the $3$ and I have no idea what it means. I tried researching but couldn't find an answer. The answer was $10^{13}$ when rounding if that helps anyone.

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This notation is sometimes used for tetration. And in fact $$ 3^{3^3} \approx 7.6 \times 10^{12} $$ so not that far from $10^{13}$.

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  • 3
    $\begingroup$ oh I never saw that! good to know $\endgroup$ – gimusi Mar 10 '18 at 15:54

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