Calculate log of number less than raised to power

I want to calculate the value of 0.9 raised to power 17.I am using the log method.

$17\cdot \mathrm{log}(0.9)$.Am I doing this correctly?

I want to calculate the value of 0.9 raised to power 17.I am using the log method.

$17\cdot \mathrm{log}(0.9)$.Am I doing this correctly?