# Is 77 a Prime Number?

Is 77 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 77 is a prime or composite is - * "77 is a composite number."* Now, let us find out how and why is 77 a prime number or a composite number?

**Is 77 a prime number? -**No**Is 77 a composite number? -**Yes**Is 77 a perfect square? -**No**Factors of 77 -**1, 7, 11, 77**Prime Factors of 77 -**7, 11

## Is 77 a Prime Number?

No, 77 is not a prime number. The number 77 is divisible by 1, 7, 11, 77. For a number to be classified as a prime number, it should have exactly two factors. Since 77 has more than two factors, i.e. 1, 7, 11, 77, it is not a prime number.

## Why is 77 not a Prime Number?

To understand whether 77 is prime or composite, it is important to find its factors.

**Factors of 77:** 1, 7, 11, 77

Since 77 has more than 2 factors, we can say that 77 is not a prime number.

## Is 77 a Composite Number?

Yes, since 77 has more than two factors i.e. 1, 7, 11, 77. In other words, 77 is a composite number because 77 has more than 2 factors.

**Problem Statements: **

Is 77 a Prime Number? | No |

Is 77 a Composite Number? | Yes |

Is 77 a Perfect Cube? | No |

Square Root of 77 | 8.774964 |

Is 77 an Even Number? | No |

Multiples of 77 | 77, 154, 231, 308, 385, 462, 539, 616, 693, 770 |

Is 77 a Perfect Square? | No |

Square of 77 | 5929 |

Cube Root of 77 | 4.254315 |

Is 77 an Odd Number? | Yes |

**Fun Facts: **

- 23 is the smallest prime number having consecutive digits.
- 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. - All primes except 2 are odd.

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