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Is 691 a Prime Number?

Is 691 a prime number? If a number has only two factors, i.e. 1 and the number itself, it is known as a prime number. In contrast, composite numbers have more than two factors. By this explanation, can we answer the question - is 691 a prime number? According to the definition mentioned above, we can say "yes, 691 is a prime number." Now let us take a look at the detailed solution of why is 691 a prime number?

Is 691 a prime number? - Yes
Is 691 a composite number? - No
Factors of 691 - 1, 691
Prime Factors of 691 - 691
Is 691 a perfect square? - No

Yes, 691 is a prime number. The number 691 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 691 has exactly two factors, i.e. 1 and 691, it is a prime number.

Is 691 a Prime or Composite?

How is 691 a Prime Number?

To understand whether 691 is prime or composite, it is important to find its factors.

Factors of 691: 1, 691

Therefore, we can say that 691 is a prime number since it has only 2 factors.

☛ Prime Number Calculator

Is 691 a Composite Number?

No, since 691 has only two factors, i.e. 1 and 691. In other words, 691 is not a composite number because 691 doesn’t have more than 2 factors.

Problem Statements:

Is 691 a Prime Number?	Yes
Is 691 a Composite Number?	No
Square Root of 691	26.286879
Is 691 a Perfect Square?	No
Is 691 an Odd Number?	Yes
Multiples of 691	691, 1382, 2073, 2764, 3455, 4146, 4837, 5528, 6219, 6910
Cube Root of 691	8.840803
Is 691 a Perfect Cube?	No
Is 691 an Even Number?	No

Fun Facts:

A semiprime number is a composite number that is the product of exactly two prime numbers. Example - 697 is semiprime, since 697 can be written as 17 × 41.
All primes except 2 are odd.
2 is the smallest prime number.

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