Is 53 prime or composite?

53 is prime.

A prime number is a number divisible by only 1 and itself. A composite number is a number that is divisible by 1, itself and however many other numbers.

It’s important to note that 2 is the only even prime number (even = ends by a 0,2,4,6,8). Also, 1 is neither prime not composite.

To identify whether a number is prime or composite it helps to know your divisibility rules.

Practice exercises:

  1. Indicate whether the following numbers are prime or composite

a). 111

b) 97

c) 2

d) 1