# Is 1681 a Prime Number?

Is 1681 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 1681 is a prime or composite is - * "1681 is a composite number."* Now, let us find out how and why is 1681 a prime number or a composite number?

**Is 1681 a prime number? -**No**Is 1681 a composite number? -**Yes**Factors of 1681 -**1, 41, 1681**Is 1681 a perfect square? -**Yes**Prime Factors of 1681 -**41

## Is 1681 a Prime Number?

No, 1681 is not a prime number. The number 1681 is divisible by 1, 41, 1681. For a number to be classified as a prime number, it should have exactly two factors. Since 1681 has more than two factors, i.e. 1, 41, 1681, it is not a prime number.

## Why is 1681 not a Prime Number?

To understand whether 1681 is composite or prime, it is important to find its factors.

**Factors of 1681:** 1, 41, 1681

Since 1681 has more than 2 factors, we can say that 1681 is not a prime number.

## Is 1681 a Composite Number?

Yes, since 1681 has more than two factors i.e. 1, 41, 1681. In other words, 1681 is a composite number because 1681 has more than 2 factors.

**Problem Statements: **

Is 1681 a Prime Number? | No |

Is 1681 a Composite Number? | Yes |

Is 1681 an Odd Number? | Yes |

Multiples of 1681 | 1681, 3362, 5043, 6724, 8405, 10086, 11767, 13448, 15129, 16810 |

Square Root of 1681 | 41 |

Is 1681 an Even Number? | No |

Cube Root of 1681 | 11.890173 |

Is 1681 a Perfect Cube? | No |

Is 1681 a Perfect Square? | Yes |

Square of 1681 | 2825761 |

**Fun Facts: **

- 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.
- 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: **

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- Is 25 a Prime Number? - No
- Is 105 a Prime Number? - No
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- Is 429 a Prime Number? - No

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