23 squared

23² = 23 × 23 = 529

To square a number, multiply it by itself. 23 squared is written 23² or 23^2, and the answer is 529.

How to work out 23 squared

Direct: 23 × 23 = 529.
From the previous square: 22² = 484, and 23² = 484 + (2 × 23 − 1) = 484 + 45 = 529.
Split the number: 23 = 20 + 3, so 23² = 20² + 2 × 20 × 3 + 3² = 400 + 120 + 9 = 529.

Related

23 cubed = 12,167
The square root of 529 is 23, so 529 is a perfect square.

Squares near 23

Number	Squared
19	361
20	400
21	441
22	484
24	576
25	625
26	676
27	729

Need another number? Use the exponent calculator or see all squares and cubes.