# Is 521 a Prime Number?

Is 521 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 521 is a prime or composite is - * "521 is a prime number."* Now, let us find out how and why is 521 a prime number or a composite number?

**Is 521 a prime number? -**Yes**Is 521 a composite number? -**No**Factors of 521 -**1, 521**Is 521 a perfect square? -**No**Prime Factors of 521 -**521

## Is 521 a Prime Number?

Yes, 521 is a prime number. The number 521 is divisible only by 1 and the number itself. For a number to be classified as a prime number, it should have exactly two factors. Since 521 has exactly two factors, i.e. 1 and 521, it is a prime number.

## How is 521 a Prime Number?

To understand whether 521 is composite or prime, it is important to find its factors.

**Factors of 521:** 1, 521

Therefore, we can say that 521 is a prime number since it has only 2 factors.

## Is 521 a Composite Number?

No, since 521 has only two factors, i.e. 1 and 521. In other words, 521 is not a composite number because 521 doesn’t have more than 2 factors.

**Problem Statements: **

Is 521 a Prime Number? | Yes |

Is 521 a Composite Number? | No |

Is 521 an Odd Number? | Yes |

Is 521 an Even Number? | No |

Is 521 a Perfect Cube? | No |

Is 521 a Perfect Square? | No |

Cube Root of 521 | 8.046586 |

Square Root of 521 | 22.825424 |

Multiples of 521 | 521, 1042, 1563, 2084, 2605, 3126, 3647, 4168, 4689, 5210 |

**Fun Facts: **

- All prime numbers don't have the last digit as 5 except the number 5.
- 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. - 23 is the smallest prime number having consecutive digits.

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