Largest Integer Expressible by 3 Digits/Number of Digits/Historical Note
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Historical Note on Largest Integer Expressible by 3 Digits: Number of Digits
The number of digits in $9^{9^9}$ was demonstrated to be $369 \, 693 \, 100$ in $1906$ by Charles-Ange Laisant.
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $9^{9^9}$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $9^{9^9}$