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A day full of math games & activities. Find one near you.

Is 80 a Prime Number?

Is 80 a prime number? If a number has only two factors, i.e. 1 and the number itself, it is known as a prime number. In contrast, composite numbers have more than two factors. By this explanation, can we answer the question - is 80 a prime number? According to the definition mentioned above, we can say "No, 80 is not a prime number." Now let us take a look at the detailed solution of why is 80 a prime number or a composite number?

  • Is 80 a prime number? - No
  • Is 80 a composite number? - Yes
  • Is 80 a perfect square? - No
  • Factors of 80 - 1, 2, 4, 5, 8, 10, 16, 20, 40, 80
  • Prime Factors of 80 - 2, 5

Is 80 a Prime or Composite?

Is 80 a Prime Number?

No, 80 is not a prime number. The number 80 is divisible by 1, 2, 4, 5, 8, 10, 16, 20, 40, 80. For a number to be classified as a prime number, it should have exactly two factors. Since 80 has more than two factors, i.e. 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, it is not a prime number.

Is 80 a Prime Number?

Why is 80 not a Prime Number?

To understand whether 80 is prime or composite, it is important to find its factors.

Factors of 80: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

Since 80 has more than 2 factors, we can say that 80 is not a prime number.

☛ Prime Number Calculator

Is 80 a Composite Number?

Yes, since 80 has more than two factors i.e. 1, 2, 4, 5, 8, 10, 16, 20, 40, 80. In other words, 80 is a composite number because 80 has more than 2 factors.

Problem Statements:

Is 80 a Prime Number? No
Is 80 a Composite Number? Yes
Cube Root of 80 4.308863
Square of 80 6400
Is 80 an Odd Number? No
Is 80 a Perfect Cube? No
Square Root of 80 8.944272
Is 80 an Even Number? Yes
Multiples of 80 80, 160, 240, 320, 400, 480, 560, 640, 720, 800
Is 80 a Perfect Square? No

Fun Facts:

  • 5 is the only prime number having the last digit as 5.
  • Numbers X and Y are said to be coprime if they have only one common factor that is 1.
  • Euler discovered a polynomial n2 + n + 41 that produces prime numbers for values of n that lie between 0 and 39 inclusive. It can generate 40 prime numbers for 0 <= n <= 39.

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