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 |
FAQs
Answer: Yes, 2 is a prime number.
Answer: No, 2 is not a composite number. It is a prime number.
Answer: 2 is the smallest prime number.