Is 397 a Prime Number?

Is 397 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 397 is a prime number or composite, we need to divide it with numbers from 1 to 397. To find out the answer to this question "is 397 is a prime number" and to gain a detailed understanding of "how and why is 397 a prime number?" Let's learn more.

• Is 397 a prime number? - Yes
• Is 397 a composite number? - No
• Factors of 397 - 1, 397
• Is 397 a perfect square? - No
• Prime Factors of 397 - 397

Is 397 a Prime Number?

Yes, 397 is a prime number. The number 397 is divisible only by 1 and the number itself. For a number to be classified as a prime number, it should have exactly two factors. Since 397 has exactly two factors, i.e. 1 and 397, it is a prime number.

How is 397 a Prime Number?

To understand whether 397 is composite or prime, it is important to find its factors.

Factors of 397: 1, 397

Therefore, we can say that 397 is a prime number since it has only 2 factors.

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Is 397 a Composite Number?

No, since 397 has only two factors, i.e. 1 and 397. In other words, 397 is not a composite number because 397 doesn’t have more than 2 factors.

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Fun Facts:

• A palindrome prime is a prime number that when read in reverse order results in the same number. Examples - 787, 373, 353
• Numbers X and Y are said to be coprime if they have only one common factor that is 1.
• A semiprime number is a composite number that is the product of exactly two prime numbers. Example - 697 is semiprime, since 697 can be written as 17 × 41.

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