Is 268 a prime number?

Prime Number Checker
Number

Is 268 a prime or composite number?

Answer

Number 268 is not a Prime

268 = 2² × 67

268 has 6 divisors — 1, 2, 4, 67, 134 and 268; a prime has exactly two: 1 and itself.

Primes up to √268

16² = 256 ≤ 268 < 289 = 17², so it is enough to try primes up to 16

  • ÷2 divides

268 ÷ 2 = 134 — 2 divides 268, so 268 is composite

Nearest primes: 263 and 269

Related Calculations

See Also

Prime numbers list

NumberIs Prime
247No: 13 × 19
249No: 3 × 83
250No: 2 × 5³
251Yes
252No: 2² × 3² × 7
253No: 11 × 23
255No: 3 × 5 × 17
256No: 2⁸
257Yes
259No: 7 × 37
261No: 3² × 29
263Yes
264No: 2³ × 3 × 11
266No: 2 × 7 × 19
267No: 3 × 89
268No: 2² × 67
269Yes
270No: 2 × 3³ × 5
271Yes
273No: 3 × 7 × 13
274No: 2 × 137
275No: 5² × 11
277Yes
279No: 3² × 31
280No: 2³ × 5 × 7
281Yes
282No: 2 × 3 × 47
283Yes
284No: 2² × 71
285No: 3 × 5 × 19

FAQ

Is 268 a prime or composite number?

Number 268 is not a Prime

How many factors are in a number 268?

6

How to check if 268 is prime?

Divide 268 by the primes in order: 16² = 256 ≤ 268 < 289 = 17², so it is enough to try primes up to 16. The first one that divides it is 2: 268 ÷ 2 = 134, so 268 is composite.

See Also