# Is 8 a Prime Number?

Is 8 a prime number? How do you know that 8 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 8? Is 8 a prime number? * "No, 8 is not a prime number."* Since 8 has more than 2 factors i.e. 1, 2, 4, 8, it is a composite number. Let's study this in detail.

**Is 8 a prime number? -**No**Is 8 a composite number? -**Yes**Is 8 a perfect square? -**No**Prime Factors of 8 -**2**Factors of 8 -**1, 2, 4, 8

## Is 8 a Prime Number?

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

## Why is 8 not a Prime Number?

To understand whether 8 is composite or prime, it is important to find its factors.

**Factors of 8:** 1, 2, 4, 8

Since 8 has more than 2 factors, we can say that 8 is not a prime number.

## Is 8 a Composite Number?

Yes, since 8 has more than two factors i.e. 1, 2, 4, 8. In other words, 8 is a composite number because 8 has more than 2 factors.

**Problem Statements: **

Is 8 a Prime Number? | No |

Is 8 a Composite Number? | Yes |

Multiples of 8 | 8, 16, 24, 32, 40, 48, 56, 64, 72, 80 |

Is 8 a Perfect Square? | No |

Cube Root of 8 | 3 |

Square Root of 8 | 2.828427 |

Square of 8 | 64 |

Is 8 an Even Number? | Yes |

Is 8 an Odd Number? | No |

Is 8 a Perfect Cube? | Yes |

**Fun Facts: **

- A palindrome prime is a prime number that when read in reverse order results in the same number. Examples - 10601, 11311, 12421
- Euler discovered a polynomial n
^{2}+ 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. - A semiprime number is a composite number that is the product of exactly two prime numbers. Example - 115 is semiprime, since 115 can be written as 5 × 23.

**☛ Also Check: **

- Is 43 a Prime Number? - Yes
- Is 3 a Prime Number? - Yes
- Is 37 a Prime Number? - Yes
- Is 16 a Prime Number? - No
- Is 111 a Prime Number? - No
- Is 125 a Prime Number? - No
- Is 68 a Prime Number? - No
- Is 1000 a Prime Number? - No

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