Is 1681 a Prime Number?

Is 1681 a prime number? Numbers having only 2 factors, i.e. 1 and the number itself are known as prime numbers whereas numbers with more than 2 factors are known as composite. The answer to the question whether 1681 is a prime or composite is - "1681 is a composite number." Now, let us find out how and why is 1681 a prime number or a composite number?

• Is 1681 a prime number? - No
• Is 1681 a composite number? - Yes
• Factors of 1681 - 1, 41, 1681
• Is 1681 a perfect square? - Yes
• Prime Factors of 1681 - 41

Is 1681 a Prime Number?

No, 1681 is not a prime number. The number 1681 is divisible by 1, 41, 1681. For a number to be classified as a prime number, it should have exactly two factors. Since 1681 has more than two factors, i.e. 1, 41, 1681, it is not a prime number.

Why is 1681 not a Prime Number?

To understand whether 1681 is composite or prime, it is important to find its factors.

Factors of 1681: 1, 41, 1681

Since 1681 has more than 2 factors, we can say that 1681 is not a prime number.

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Is 1681 a Composite Number?

Yes, since 1681 has more than two factors i.e. 1, 41, 1681. In other words, 1681 is a composite number because 1681 has more than 2 factors.

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Fun Facts:

• 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.
• 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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