# Is 511 a Prime Number?

Is 511 a prime number? How do you know that 511 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 511? Is 511 a prime number? * "No, 511 is not a prime number."* Since 511 has more than 2 factors i.e. 1, 7, 73, 511, it is a composite number. Let's study this in detail.

**Is 511 a prime number? -**No**Is 511 a composite number? -**Yes**Prime Factors of 511 -**7, 73**Is 511 a perfect square? -**No**Factors of 511 -**1, 7, 73, 511

## Is 511 a Prime Number?

No, 511 is not a prime number. The number 511 is divisible by 1, 7, 73, 511. For a number to be classified as a prime number, it should have exactly two factors. Since 511 has more than two factors, i.e. 1, 7, 73, 511, it is not a prime number.

## Why is 511 not a Prime Number?

To understand whether 511 is composite or prime, it is important to find its factors.

**Factors of 511:** 1, 7, 73, 511

Since 511 has more than 2 factors, we can say that 511 is not a prime number.

## Is 511 a Composite Number?

Yes, since 511 has more than two factors i.e. 1, 7, 73, 511. In other words, 511 is a composite number because 511 has more than 2 factors.

**Problem Statements: **

Is 511 a Prime Number? | No |

Is 511 a Composite Number? | Yes |

Is 511 a Perfect Square? | No |

Is 511 an Odd Number? | Yes |

Square of 511 | 261121 |

Cube Root of 511 | 7.994772 |

Square Root of 511 | 22.605309 |

Multiples of 511 | 511, 1022, 1533, 2044, 2555, 3066, 3577, 4088, 4599, 5110 |

Is 511 a Perfect Cube? | No |

Is 511 an Even Number? | No |

**Fun Facts: **

- 23 is the smallest prime number having consecutive digits.
- A perfect square (square number) is always a composite number.
- Numbers X and Y are said to be coprime if they have only one common factor that is 1.

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