Is 79 a prime number?

47 is a prime number and on the prime factorization of 79, we get only 1 and 79 as the factor of 79.

And, also it contains exactly two factors, which is 1 and 79, where it is known as the prime number.

If a number must hold only 2 divisors when divided.

The factors should be number 1 and itself only.

Listed below are some methods to find out whether a particular number is prime or composite?
 

In the counting divisors method, list the divisors of the given number and check if the number, to be considered prime, satisfies the two criteria.

The counting divisors method for 79 would simply be

• Divisors of 79=1,79.

• Number of divisors=2

In the divisibility method, the prime number only has 2 divisors, which are 1 and itself. There is no specific divisibility check for the number 79 other than checking if it is divisible by 1 and 79.

List the prime numbers chart up to 80.

The prime numbers 1 to 80 are 1, 2, 3, 5, 7, 11, 13, 17, 19, 23, 31, 37, 41, 43, 47,53, 59, 61, 67, 71, 73, 79.

By keeping a note of the chart like above, we can easily determine if a number is prime or not.
 

Prime factorization is only applicable to non-prime numbers/composite numbers. Since 79 has no other factor than 1 and 79, it cannot be factored into smaller prime numbers.
 

• Prime Number: A number which can be divided by itself and 1 is called a prime number.

• Composite Number: A number that can be prime factorized further. It has more factors other than itself and 1.

• Prime Factorization: Splitting down a number into its smaller factors is said to be a prime factorization.