# Is 78 Prime Number or Composite Number

Last Updated: April 27, 2024

## Is 78 a Prime Number?

### No – 78 is not a Prime Number.

Why No: 78 is not a prime number because it does not meet the prime criteria of having exactly two distinct positive divisors: 1 and itself. Check if any number is prime or not.

## Is 78 a Composite Number?

### Yes – 78 is a Composite Number.

Why Yes: 78 is a composite number because it has more than two distinct positive divisors. It is divisible by 1, 2, 3, 6, 13, 26, 39, and itself (78).

## Problem Statements

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
Multiples of 78 78, 156, 234, 312, 390, 468, 546, 624, 702, 780
Cube Root of 78 Approximately 4.28
Square of 78 6084
Square Root of 78 Approximately 8.832
Is 78 a Perfect Cube? No
Is 78 an Irrational number No
Is 78 a Rational number Yes
Is 78 a Real number Yes
Is 78 an Irrational number Yes
Is 78 a Natural number Yes
Is 78 a Whole number Yes
Is 78 an Even or odd number Yes (78 is an even number)
Is 78 an Ordinal number Yes
Is 78 a Complex number Yes (as all real numbers are also complex numbers)

## What are the factors of 78?

The factors of 78 are 1, 2, 3, 6, 13, 26, 39, and 78. 78 is not a prime number because it is divisible by numbers other than 1 and itself, demonstrating it has more than two factors. This clarity confirms that it is a composite number, not a prime number

## What Kind of Number is 78?

78 is categorized as a composite number because it has more than two distinct positive divisors: 1, 2, 3, 6, 13, 26, 39, and itself.

• 78 is one of the even numbers; it is an even number.
• 78 holds significance in various contexts, potentially for its unique properties as a composite number.
• 78 is a natural number.
• 78 is a positive integer.
• 78 is discussed in the context of composite numbers rather than prime numbers.
• 78 is an even number.
• 78 is a rational number.
• 78 is a whole number.

78, as a composite number, occupies a different position in mathematics compared to prime numbers. Unlike a prime number that is divisible only by 1 and itself, 78’s divisibility by 1, 2, 3, 6, 13, 26, 39, and itself illustrates its composite nature. Its properties as an even number, a composite, and a natural number make it an interesting figure in various mathematical discussions.

## Nearest Prime Number of 78

The nearest prime numbers to 78 are 73 and 79. 73 is the closest prime number less than 78, and 79 is the closest prime number greater than 78.

## Why is 78 Considered a Composite Number?

78 is considered a composite number because it is divisible by numbers other than 1 and itself. The presence of additional divisors such as 2, 3, 6, 13, 26, and 39 confirms its status as a composite number.

## How can you Determine if a Number is Prime or Composite?

To determine if a number is prime or composite, you can try dividing it by numbers greater than 1 and less than itself. If the number can be divided evenly by any of these numbers, it is composite. If not, it is prime.

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