The 6th power.
As a product of its prime factors in exponents: 2^3 times 5^3 = 1000
You can write it as 103. That would be the most common way, but there's many other correct ways to write it.
102
811
101
419,854,000 using exponents is 4.19854 x 108
7 to the 1/3 power
2
4.6 × 101
56
2^9