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Is 216 a prime number?

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Is 216 a prime or composite number?

Answer

Number 216 is not a Prime

216 = 2³ × 3³

216 has 16 divisors, not two: a prime is divisible only by 1 and itself.

Primes up to √216

14² = 196 ≤ 216 < 225 = 15², so it is enough to try primes up to 14

÷2 divides

216 ÷ 2 = 108 — 2 divides 216, so 216 is composite

Nearest primes: 211 and 223

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See Also

Factors of a Number - List all Factors and Factor Pairs of a Number
Prime Factorization - Prime Factorization Calculator
Prime Numbers List - List of all Prime Numbers - how many Prime numbers are between

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Is 216 a prime number? Is 216 a prime number? 216 is a composite number. Check if any number is prime or composite with our free online prime checker.

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Prime numbers list

Number	Is Prime
200	No: 2³ × 5²
201	No: 3 × 67
202	No: 2 × 101
203	No: 7 × 29
204	No: 2² × 3 × 17
205	No: 5 × 41
206	No: 2 × 103
207	No: 3² × 23
208	No: 2⁴ × 13
209	No: 11 × 19
210	No: 2 × 3 × 5 × 7
211	Yes
213	No: 3 × 71
214	No: 2 × 107
215	No: 5 × 43
216	No: 2³ × 3³
217	No: 7 × 31
219	No: 3 × 73
220	No: 2² × 5 × 11
221	No: 13 × 17
222	No: 2 × 3 × 37
223	Yes
225	No: 3² × 5²
226	No: 2 × 113
227	Yes
229	Yes
231	No: 3 × 7 × 11
232	No: 2³ × 29
233	Yes
234	No: 2 × 3² × 13

FAQ

Is 216 a prime or composite number?

Number 216 is not a Prime

How many factors are in a number 216?

16

How to check if 216 is prime?

Divide 216 by the primes in order: 14² = 196 ≤ 216 < 225 = 15², so it is enough to try primes up to 14. The first one that divides it is 2: 216 ÷ 2 = 108, so 216 is composite.