Is 2 a prime number?

Yes, 2 is a prime number. Where a prime number is a number that can only be divided by itself and one without holding remainders. The factors of 2 are 1 and 2. 

Since there are only two factors of 2, it shows that 2 is a prime number.

Because the number 2 holds only two different divisors, as it meets the condition of having any other factors except 1 and itself.

Listed below are the methods by which we can devise if a particular number is prime or not;

• Counting Divisors Method

• Divisibility Test

• Prime Number Chart

• Prime Factorization Method
   

The only condition, this method involves is that a particular number is prime if and only if it has two distinct integers as its divisors.

In the case of 2, the only two distinct divisors are: 1 and 2

Hence, 2 is prime.
 

The divisibility rule of 2 helps us find whether a number is a multiple of 2 or not without performing the actual division.
The divisibility rule of 2 states that if the last digit of a number is divisible by 2 that is, the last digit is 0, 2, 4, 6, or 8, then the number is also divisible by 2.
 

The list of prime numbers up to 10 is — 2,3,5,7,

Following the above chart for reference, we can ascertain that 2 is a prime number.
 

Composite numbers can be broken down using prime factorization, however, 2 has no factors but 1 and itself, therefore it cannot be factored into smaller prime numbers.
 

• Prime Factorization:  It is a way of expressing a number as a product of its prime factors. 

• Composite numbers: Composite numbers are numbers with multiples that are not just 1 and the number itself.

• Twin prime numbers: Twin primes are those prime number pairs that have a difference of 2.