Is 2 a Prime Number or a Composite Number?

Is 2 is a prime number? Yes, 2 is a prime number. It is known that whole numbers can be classified into prime numbers or composite numbers based on the number of factors. In this article, we will discuss whether 2 is a prime number or a composite number.

Is 2 a Prime Number?

A prime number has only two factors: 1 and the number itself. We know that the factors of a number are the divisors of the number.

Note that 2 is divisible by 1 and 2 only.

So the factors of 2 are 1 and 2.

∴ 2 is a prime number. Note that 2 is the smallest and only even prime number.

 

Is 2 a Composite Number?

It is known that a composite number has more factors other than 1 and the number itself. As 2 has only two factors: 1 and the number 2 itself, we deduce that

2 is not a composite number.

Also Read: Is 11 a prime number

 

Nature of the Number 2

• 2 is the smallest prime number
• 2 is the only even prime number
• 2 is an even number; but not an odd number
• 2 is the second natural number

Facts about 2:

Is 2 a prime number?	Yes, 2 is a prime number.
Is 2 a composite number?	No, 2 is not a composite number.
Square of 2	22 = 2×2 = 4
Square root of 2	√2 = 1.414
Cube root of 2	$\sqrt[3]{2}=1.2599$
Is 2 a perfect square?	As the square root of 2 is not a whole number, 2 is not a perfect square.
Is 2 a perfect cube?	As the cube root of 2 is not a whole number, 2 is not a perfect cube.
Is 2 an even number?	As 2 is divisible by 2, we deduce that 2 is an even number.
Is 2 an odd number?	As 2 divides 2, the number 2 is not an odd number.
Multiples of 2	The first five multiples of 2 are 2, 4, 6, 8, and 10.
Divisors of 2	1 and 2
Factors of 2	1 and 2
Prime factors of 2	2 is the only prime factor of 2
Prime divisor of 2	2 is the only prime divisor of 2

Related Topics

• Factors of 2
• Multiples of 2

FAQs