There are only two factors in a prime number – 1 and itself. In other words, only 1 and the prime number itself can divide a prime number evenly. It is also necessary for prime numbers to be greater than 1. For example, 7 is a prime number, because 7 cannot be divided by any number except for 1 and 7.
Is 5 a Prime Number?
Is 5 a prime number? The concept of prime numbers needs to be understood first. Prime numbers have only two factors (1 and the number itself). Composite numbers have more than two factors. How about 5? How prime is 5? There are only two factors in 5, i.e. 1, and 5, which makes it a prime number.
Factors of 5: 1, 5
So, we can say that 5 is a prime number since it has only 2 factors.
What is a prime number?
A prime number is a whole number greater than 1 with only two factors – itself and 1.
In order to divide a prime number by any other positive integer, or even a decimal or fraction, a remainder must be left behind.
An example of a prime number is 17. Its only divisors are 1 and 17. Dividing a prime number by another natural number results in numbers left over e.g. 17 ÷ 6 = 2 remainder 5.
A perfect cube is always a composite number.