# Is 641 a Prime Number?

Is 641 a Prime Number? * "Yes, 641 is a prime number."* A number can be classified as prime or composite depending on the factors it contains; it could either have only 2 factors or more than 2 factors. Numbers like 461 with only 2 factors, i.e. 1 and 461 are called prime numbers. However, numbers like 520 with more than 2 factors are called composite numbers. Let us find out how and why is 641 a prime number?

**Is 641 a prime number? -**Yes**Is 641 a composite number? -**No**Prime Factors of 641 -**641**Is 641 a perfect square? -**No**Factors of 641 -**1, 641

## Is 641 a Prime Number?

Yes, 641 is a prime number. The number 641 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 641 has exactly two factors, i.e. 1 and 641, it is a prime number.

## How is 641 a Prime Number?

To understand whether 641 is prime or composite, it is important to find its factors.

**Factors of 641:** 1, 641

Therefore, we can say that 641 is a prime number since it has only 2 factors.

## Is 641 a Composite Number?

No, since 641 has only two factors, i.e. 1 and 641. In other words, 641 is not a composite number because 641 doesn’t have more than 2 factors.

**Problem Statements: **

Is 641 a Prime Number? | Yes |

Is 641 a Composite Number? | No |

Is 641 an Odd Number? | Yes |

Square Root of 641 | 25.317978 |

Is 641 a Perfect Cube? | No |

Cube Root of 641 | 8.622206 |

Multiples of 641 | 641, 1282, 1923, 2564, 3205, 3846, 4487, 5128, 5769, 6410 |

Is 641 a Perfect Square? | No |

Is 641 an Even Number? | No |

**Fun Facts: **

- All prime numbers don't have the last digit as 5 except the number 5.
- 2 is the smallest prime number.
- A palindrome prime is a prime number that when read in reverse order results in the same number. Examples - 787, 373, 353

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