Work out nth power instantly with clear inputs, formula shown and shareable results.
Raising b to the power n multiplies b by itself n times. A negative exponent gives the reciprocal, b⁻ⁿ = 1/bⁿ, and a zero exponent gives 1 for any non-zero base.
Power
bⁿ = b × b × … × b (n factors)
Negative exponent
b⁻ⁿ = 1 / bⁿ
2187, and 3⁸ = 6561.
Because bⁿ / bⁿ = bⁿ⁻ⁿ = b⁰ and any non-zero number divided by itself is 1.