Architecture

Q: Is 28 A Prime Or Composite Number, Is 28 A Prime Or Composite Number

Is 28 a prime number? How do you know that 28 is prime or composite? Let us first understand what makes a number 'prime'. If a number has only 2 factors (1 and the number itself), then it is a prime number. If the number has more than 2 factors, then it is composite. Now, what do you think of 28? Is 28 a prime number? “No, 28 is not a prime number.” Since 28 has more than 2 factors i.e. 1, 2, 4, 7, 14, 28, it is a composite number. Let's study this in detail.

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Is 28 a prime number? – NoIs 28 a composite number? – YesFactors of 28 – 1, 2, 4, 7, 14, 28Prime Factors of 28 – 2, 7Is 28 a perfect square? – No

Is 28 a Prime Number?

No, 28 is not a prime number. The number 28 is divisible by 1, 2, 4, 7, 14, 28. For a number to be classified as a prime number, it should have exactly two factors. Since 28 has more than two factors, i.e. 1, 2, 4, 7, 14, 28, it is not a prime number.

Why is 28 not a Prime Number?

To understand whether 28 is composite or prime, it is important to find its factors.

Factors of 28: 1, 2, 4, 7, 14, 28

Since 28 has more than 2 factors, we can say that 28 is not a prime number.

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Is 28 a Composite Number?

Yes, since 28 has more than two factors i.e. 1, 2, 4, 7, 14, 28. In other words, 28 is a composite number because 28 has more than 2 factors.

Problem Statements:

 Is 28 a Prime Number? No Is 28 a Composite Number? Yes Is 28 a Perfect Cube? No Multiples of 28 28, 56, 84, 112, 140, 168, 196, 224, 252, 280 Is 28 an Odd Number? No Square Root of 28 5.291503 Square of 28 784 Is 28 an Even Number? Yes Cube Root of 28 3.036586 Is 28 a Perfect Square? No

Fun Facts:

Numbers X and Y are said to be coprime if they have only one common factor that is 1.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.A palindrome prime is a prime number that when read in reverse order results in the same number. Examples – 10601, 11311, 12421

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