Square Root of 221 Simplified

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What is the square root of 221 simplified?

Answer

√221 cannot be simplified — its simplest radical form is
√221

√221 is already in simplest form — 221 has no square factor other than 1, so nothing comes out of the radical. As a decimal, √221 ≈ 14.866.

Simplifying √221 Step by Step

1. Prime factorization. — All Prime Factors of 221:

221 = 13 × 17

2. Pair up equal primes. Each pair is a perfect square and comes out of the root as one factor; a prime without a partner stays under the radical.

Prime factorTimes in 221Comes out of the rootStays under the root
131—13
171—17

3. Take the pairs out of the root.

√221 = √(13 × 17)

No prime appears twice, so there is no pair to take out.

√221

4. Check by squaring back.

The only perfect square dividing 221 is 1 = 1², and 1² × 221 = 221

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This calculator writes a square root in simplest radical form: it finds the largest perfect square that divides the number, takes its root out of the radical and leaves the rest under it. For example, it can help you find out what is the square root of 221 simplified? (The answer is: √221). Enter a whole number (e.g. '221') and hit the 'Simplify' button.
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Simplified Square Roots Table

NumberSimplest radical formDecimal value
206√206≈ 14.353
2073√23≈ 14.387
2084√13≈ 14.422
209√209≈ 14.457
210√210≈ 14.491
211√211≈ 14.526
2122√53≈ 14.56
213√213≈ 14.595
214√214≈ 14.629
215√215≈ 14.663
2166√6≈ 14.697
217√217≈ 14.731
218√218≈ 14.765
219√219≈ 14.799
2202√55≈ 14.832
221√221≈ 14.866
222√222≈ 14.9
223√223≈ 14.933
2244√14≈ 14.967
2251515
226√226≈ 15.033
227√227≈ 15.067
2282√57≈ 15.1
229√229≈ 15.133
230√230≈ 15.166
231√231≈ 15.199
2322√58≈ 15.232
233√233≈ 15.264
2343√26≈ 15.297
235√235≈ 15.33

FAQ

What is the square root of 221 simplified?

√221 cannot be simplified — its simplest radical form is √221

Is 221 a perfect square?

No. 221 has no perfect square factor other than 1, so √221 cannot be simplified and stays √221.

What is √221 as a decimal?

√221 ≈ 14.866. The decimal never ends and never repeats, so it is always rounded; the exact value is √221.

What is the largest perfect square that divides 221?

Only 1. 221 has no other square factor, so √221 is already in simplest radical form.

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