Simplify Square Root of 421

What is the square root of 421 in its simplest radical form? To be more specific, we have created an illustration below showing what we want to calculate. Our goal is to make "A" outside the radical (√) as large as possible, and "B" inside the radical (√) as small as possible.

√421 = A√B

Unfortunately, the square root of 421 cannot be simplified. Thus, here is the answer to the square root of 421 in its simplest form:

√ 421 = √ 421

Here are two different methods we used to determine why the square root of 421 cannot be simplified.

1) To be able to simplify the square root of 421, one of the factors of 421 other than 1 must be a perfect square. The factors of 421 are 1 and 421. Since none of these factors are perfect squares, the square root of 421 cannot be simplified.

2) To be able to simplify the square root of 421, all the prime factors of 421 cannot be unique. When we did prime factorization of 421, we found that 421 equals 421. Since all the prime factors are unique, the square root of 421 cannot be simplified.

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