Is 78 a prime number?
Yes
No
It is sometimes prime
None of the above
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Is 78 a Prime Number or Composite Number [Why & Why not Detailed Guide]
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
| Property | Answer |
|---|---|
| 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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Practice Test
Which of these statements is true for the number 78?
It is a prime number
It is less than 80
It is a perfect square
It is only divisible by 1 and 78
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Which property is characteristic of the number 78?
It is a perfect square
It has exactly two factors
It can be divided by 2 and 39
It is divisible by 10
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If 78 is divisible by both 2 and 3, what type of number is it?
Prime
Composite
Rational
Imaginary
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Which of these numbers is a factor of 78?
21
8
39
25
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What is the result of dividing 78 by 39?
2
3
1
5
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Which number is NOT a divisor of 78?
1
39
22
6
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Which of these statements about 78 is correct?
78 is a prime number
78 is divisible by 4
78 can be factored into 2 × 3 × 13
78 is less than 50
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What property confirms that 78 is not a prime number?
It ends in an 8
It is divisible by 3
It is an even number
It is greater than 50
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What can be said about the number 78 if it is divisible by both 2 and 3?
It is a prime number
It is a perfect square
It is a composite number
It is a fraction
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