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Is 23, 11, 25, 19 a composite number?

User Some
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Hi there!

23 is a prime number because it has only two factors - 1 and itself.

Remember, a factor is a number that a number can be evenly divided by. So 3 is not a factor of 23.

11 is prime as well.

25 is a composite number because it's last digit is 5. If a number's last digit is 5, then it's divisible by 5. Therefore, it's composite.

19 is a prime number.

Hope you find this helpful!

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User Apurba Pandey
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9 votes

Answer:

23 is a prime number. 11 is a prime number. 25 is a composite number. and 19 is a prime number.

Explanation:

User Aliquis
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