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Is 72 a Prime Number?

Is 72 a prime number? How do you know that 72 is prime or composite? Let us first understand what makes a number 'prime'. If a number has only 2 factors (1 and the number itself), then it is a prime number. If the number has more than 2 factors, then it is composite. Now, what do you think of 72? Is 72 a prime number? "No, 72 is not a prime number." Since 72 has more than 2 factors i.e. 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, it is a composite number. Let's study this in detail.

Is 72 a prime number? - No
Is 72 a composite number? - Yes
Prime Factors of 72 - 2, 3
Factors of 72 - 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72
Is 72 a perfect square? - No

Is 72 a Prime or Composite?

Is 72 a Prime Number?

No, 72 is not a prime number. The number 72 is divisible by 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72. For a number to be classified as a prime number, it should have exactly two factors. Since 72 has more than two factors, i.e. 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, it is not a prime number.

Is 72 a Prime Number?

Why is 72 not a Prime Number?

To understand whether 72 is composite or prime, it is important to find its factors.

Factors of 72: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72

Since 72 has more than 2 factors, we can say that 72 is not a prime number.

☛ Prime Number Calculator

Is 72 a Composite Number?

Yes, since 72 has more than two factors i.e. 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72. In other words, 72 is a composite number because 72 has more than 2 factors.

Problem Statements:

Is 72 a Prime Number?	No
Is 72 a Composite Number?	Yes
Is 72 a Perfect Square?	No
Is 72 a Perfect Cube?	No
Cube Root of 72	4.160162
Square of 72	5184
Is 72 an Even Number?	Yes
Multiples of 72	72, 144, 216, 288, 360, 432, 504, 576, 648, 720
Is 72 an Odd Number?	No
Square Root of 72	8.485281

Fun Facts:

2 is the smallest prime number.
23 is the smallest prime number having consecutive digits.
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.

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