Is 221 a Prime Number?

Is 221 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 221 is a prime number or composite, we need to divide it with numbers from 1 to 221. To find out the answer to this question "is 221 is a prime number" and to gain a detailed understanding of "how and why is 221 a prime number or a composite number?" Let's learn more.

• Is 221 a prime number? - No
• Is 221 a composite number? - Yes
• Prime Factors of 221 - 13, 17
• Factors of 221 - 1, 13, 17, 221
• Is 221 a perfect square? - No

Is 221 a Prime Number?

No, 221 is not a prime number. The number 221 is divisible by 1, 13, 17, 221. For a number to be classified as a prime number, it should have exactly two factors. Since 221 has more than two factors, i.e. 1, 13, 17, 221, it is not a prime number.

Why is 221 not a Prime Number?

To understand whether 221 is composite or prime, it is important to find its factors.

Factors of 221: 1, 13, 17, 221

Since 221 has more than 2 factors, we can say that 221 is not a prime number.

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Is 221 a Composite Number?

Yes, since 221 has more than two factors i.e. 1, 13, 17, 221. In other words, 221 is a composite number because 221 has 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 - 10601, 11311, 12421
• 23 is the smallest prime number having consecutive digits.
• A pair of prime numbers X and Y are said to be twin prime numbers if the absolute difference between them is 2. Example - (311, 313) are twin prime numbers.

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