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Is 165 a Prime Number?

Is 165 a prime number? If a number has only two factors, i.e. 1 and the number itself, it is known as a prime number. In contrast, composite numbers have more than two factors. By this explanation, can we answer the question - is 165 a prime number? According to the definition mentioned above, we can say "No, 165 is not a prime number." Now let us take a look at the detailed solution of why is 165 a prime number or a composite number?

  • Is 165 a prime number? - No
  • Is 165 a composite number? - Yes
  • Factors of 165 - 1, 3, 5, 11, 15, 33, 55, 165
  • Is 165 a perfect square? - No
  • Prime Factors of 165 - 3, 5, 11

Is 165 a Prime or Composite?

Is 165 a Prime Number?

No, 165 is not a prime number. The number 165 is divisible by 1, 3, 5, 11, 15, 33, 55, 165. For a number to be classified as a prime number, it should have exactly two factors. Since 165 has more than two factors, i.e. 1, 3, 5, 11, 15, 33, 55, 165, it is not a prime number.

Is 165 a Prime Number?

Why is 165 not a Prime Number?

To understand whether 165 is prime or composite, it is important to find its factors.

Factors of 165: 1, 3, 5, 11, 15, 33, 55, 165

Since 165 has more than 2 factors, we can say that 165 is not a prime number.

☛ Prime Number Calculator

Is 165 a Composite Number?

Yes, since 165 has more than two factors i.e. 1, 3, 5, 11, 15, 33, 55, 165. In other words, 165 is a composite number because 165 has more than 2 factors.

Problem Statements:

Is 165 a Prime Number? No
Is 165 a Composite Number? Yes
Square of 165 27225
Is 165 an Even Number? No
Is 165 a Perfect Square? No
Is 165 a Perfect Cube? No
Multiples of 165 165, 330, 495, 660, 825, 990, 1155, 1320, 1485, 1650
Cube Root of 165 5.484797
Square Root of 165 12.845233
Is 165 an Odd Number? Yes

Fun Facts:

  • 1 is neither prime nor composite.
  • A semiprime number is a composite number that is the product of exactly two prime numbers. Example - 115 is semiprime, since 115 can be written as 5 × 23.
  • Euler discovered a polynomial n2 + n + 41 that produces prime numbers for values of n that lie between 0 and 39 inclusive. It can generate 40 prime numbers for 0 <= n <= 39.

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