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Is 77 a Prime Number?

Is 77 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 77 is a prime or composite is - "77 is a composite number." Now, let us find out how and why is 77 a prime number or a composite number?

Is 77 a prime number? - No
Is 77 a composite number? - Yes
Is 77 a perfect square? - No
Factors of 77 - 1, 7, 11, 77
Prime Factors of 77 - 7, 11

Is 77 a Prime or Composite?

Is 77 a Prime Number?

No, 77 is not a prime number. The number 77 is divisible by 1, 7, 11, 77. For a number to be classified as a prime number, it should have exactly two factors. Since 77 has more than two factors, i.e. 1, 7, 11, 77, it is not a prime number.

Is 77 a Prime Number?

Why is 77 not a Prime Number?

To understand whether 77 is prime or composite, it is important to find its factors.

Factors of 77: 1, 7, 11, 77

Since 77 has more than 2 factors, we can say that 77 is not a prime number.

☛ Prime Number Calculator

Is 77 a Composite Number?

Yes, since 77 has more than two factors i.e. 1, 7, 11, 77. In other words, 77 is a composite number because 77 has more than 2 factors.

Problem Statements:

Is 77 a Prime Number?	No
Is 77 a Composite Number?	Yes
Is 77 a Perfect Cube?	No
Square Root of 77	8.774964
Is 77 an Even Number?	No
Multiples of 77	77, 154, 231, 308, 385, 462, 539, 616, 693, 770
Is 77 a Perfect Square?	No
Square of 77	5929
Cube Root of 77	4.254315
Is 77 an Odd Number?	Yes

Fun Facts:

23 is the smallest prime number having consecutive digits.
Euler discovered a polynomial n² + 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.
All primes except 2 are odd.

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