Is 2021 a Prime Number?

Is 2021 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 2021 a prime number? According to the definition mentioned above, we can say "No, 2021 is not a prime number." Now let us take a look at the detailed solution of why is 2021 a prime number or a composite number?

• Is 2021 a prime number? - No
• Is 2021 a composite number? - Yes
• Prime Factors of 2021 - 43, 47
• Factors of 2021 - 1, 43, 47, 2021
• Is 2021 a perfect square? - No

Is 2021 a Prime Number?

No, 2021 is not a prime number. The number 2021 is divisible by 1, 43, 47, 2021. For a number to be classified as a prime number, it should have exactly two factors. Since 2021 has more than two factors, i.e. 1, 43, 47, 2021, it is not a prime number.

Why is 2021 not a Prime Number?

To understand whether 2021 is composite or prime, it is important to find its factors.

Factors of 2021: 1, 43, 47, 2021

Since 2021 has more than 2 factors, we can say that 2021 is not a prime number.

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Is 2021 a Composite Number?

Yes, since 2021 has more than two factors i.e. 1, 43, 47, 2021. In other words, 2021 is a composite number because 2021 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.
• 5 is the only prime number having the last digit as 5.

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