Question

Tell whether the number is prime or composite.

23

Short answer

23 is a prime number.

Step-by-step solution

Step-1-Recall the concept of prime and composite numbers

Prime numbers are the numbers which are divisible by 1 and itself.

Composite numbers are the numbers which have factors other than 1 and itself.

Step-2- Find the factors of the given number

Observe that,

$\begin{array}{l}23÷1=23\\ 23÷23=1\end{array}$

Therefore, the factors of 23are 1 and 23.

Step-3- Conclusion

Since 23 has no factors other than 1 and itself, it is a prime number.