How do you write $10^3 = 1000$ in log form?

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Answer 1 · 2016-03-25T13:20:28

$log_10 1000=3$ or simply $log1000=3$

This follows directly from the definition :

$y=log_a x iff a^y=x$

How do you write 10^3 = 100010^3 = 1000 in log form?