Is 12 a Prime Number?

Is 12 a prime number? A prime number is divisible only by 1 and itself, which means it has no other divisor except 1 and the number itself. On the contrary, composite numbers have more than two factors. To determine if 12 is a prime number or composite, we need to divide it with numbers from 1 to 12. To find out the answer to this question "is 12 is a prime number" and to gain a detailed understanding of "how and why is 12 a prime number or a composite number?" Let's learn more.

• Is 12 a prime number? - No
• Is 12 a composite number? - Yes
• Prime Factors of 12 - 2, 3
• Is 12 a perfect square? - No
• Factors of 12 - 1, 2, 3, 4, 6, 12

Is 12 a Prime Number?

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

Why is 12 not a Prime Number?

To understand whether 12 is prime or composite, it is important to find its factors.

Factors of 12: 1, 2, 3, 4, 6, 12

Since 12 has more than 2 factors, we can say that 12 is not a prime number.

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Is 12 a Composite Number?

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

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Fun Facts:

• 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.
• 5 is the only prime number having the last digit as 5.

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