Help me please ! It's about Log.

Question

5^29 is an integer with [..........] places by assuming that log 2 = 0.3010

 

what's the answer in the blank? Do I want to see the solution of this Q !

thank you !

Answer 1

5 raised to the 29th power is given, in my calculator, as 1.8626...X10²⁰ and therefore it requires 21 decimal places.

 

There is no need to use the common log of two!