No, they are not the same
Here, we want to comapre two actions
Multiplying by 10 to the power of 3 is to multiply by 1000
But
To multiply by 10 factors of 3; we have this as multiplying by numbers which are multiples of 3 upto the 10th number which in fact is; 3 * 9 * 27 * 81 * 243 * 729.........