Is 238 a prime number?

Prime Number Checker
Number

Is 238 a prime or composite number?

Answer

Number 238 is not a Prime

238 = 2 × 7 × 17

238 has 8 divisors — 1, 2, 7, 14, 17, 34, 119 and 238; a prime has exactly two: 1 and itself.

Primes up to √238

15² = 225 ≤ 238 < 256 = 16², so it is enough to try primes up to 15

  • ÷2 divides

238 ÷ 2 = 119 — 2 divides 238, so 238 is composite

Nearest primes: 233 and 239

Related Calculations

See Also

Prime numbers list

NumberIs Prime
219No: 3 × 73
220No: 2² × 5 × 11
221No: 13 × 17
222No: 2 × 3 × 37
223Yes
225No: 3² × 5²
226No: 2 × 113
227Yes
229Yes
231No: 3 × 7 × 11
232No: 2³ × 29
233Yes
234No: 2 × 3² × 13
235No: 5 × 47
237No: 3 × 79
238No: 2 × 7 × 17
239Yes
240No: 2⁴ × 3 × 5
241Yes
243No: 3⁵
246No: 2 × 3 × 41
247No: 13 × 19
249No: 3 × 83
250No: 2 × 5³
251Yes
252No: 2² × 3² × 7
253No: 11 × 23
255No: 3 × 5 × 17
256No: 2⁸
257Yes

FAQ

Is 238 a prime or composite number?

Number 238 is not a Prime

How many factors are in a number 238?

8

How to check if 238 is prime?

Divide 238 by the primes in order: 15² = 225 ≤ 238 < 256 = 16², so it is enough to try primes up to 15. The first one that divides it is 2: 238 ÷ 2 = 119, so 238 is composite.

See Also