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Is 78 a Prime Number?

Is 78 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 78 is a prime or composite is - "78 is a composite number." Now, let us find out how and why is 78 a prime number or a composite number?

Is 78 a prime number? - No
Is 78 a composite number? - Yes
Is 78 a perfect square? - No
Factors of 78 - 1, 2, 3, 6, 13, 26, 39, 78
Prime Factors of 78 - 2, 3, 13

Is 78 a Prime or Composite?

Is 78 a Prime Number?

No, 78 is not a prime number. The number 78 is divisible by 1, 2, 3, 6, 13, 26, 39, 78. For a number to be classified as a prime number, it should have exactly two factors. Since 78 has more than two factors, i.e. 1, 2, 3, 6, 13, 26, 39, 78, it is not a prime number.

Is 78 a Prime Number?

Why is 78 not a Prime Number?

To understand whether 78 is prime or composite, it is important to find its factors.

Factors of 78: 1, 2, 3, 6, 13, 26, 39, 78

Since 78 has more than 2 factors, we can say that 78 is not a prime number.

☛ Prime Number Calculator

Is 78 a Composite Number?

Yes, since 78 has more than two factors i.e. 1, 2, 3, 6, 13, 26, 39, 78. In other words, 78 is a composite number because 78 has more than 2 factors.

Problem Statements:

Is 78 a Prime Number?	No
Is 78 a Composite Number?	Yes
Is 78 a Perfect Square?	No
Cube Root of 78	4.272652
Square Root of 78	8.831761
Multiples of 78	78, 156, 234, 312, 390, 468, 546, 624, 702, 780
Is 78 an Even Number?	Yes
Is 78 a Perfect Cube?	No
Is 78 an Odd Number?	No
Square of 78	6084

Fun Facts:

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.
2 is the smallest prime number.
A perfect square (square number) is always a composite number.

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